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  • Provisional Designations

    The total number of new-style designations assigned by the Minor Planet Center (and its predecessors) is 1234626. The following table lists the number of new-style minor-planet provisional designations assigned in each year, as well as the number of omitted and deleted designations and the number of designations identified with numbered minor planets, comets and natural satellites. Also given are the number of designations involved in unnumbered identifications (Unn.) and the number of designations that are principal designations (Prin.). Beyond these columns is a half-monthly breakdown of the yearly total of assigned designations. The data are complete through the latest batch of Minor Planet Circulars.

    This list was last updated on 2015 July 3.


    Year     Total    Removed    Identified with                      Half-monthly breakdown
                      Omit Del   # mps  cmts sats  Uun.   Prin.       A      B      C      D      E      F      G      H      J      K      L      M      N      O      P      Q      R      S      T      U      V      W      X      Y
    
    2015     51448     38    0     710    0    0    7073    5081     7032  12925   1559   5617   1633   8632   1263   4581    282   4009   1004   2911      0      0      0      0      0      0      0      0      0      0      0      0
    2014     81845     72    4    5454    0    0   13597   14882     1383   1619    586   3574   1295   1799   1339   4989   1999   2541    711   1745   1645   9843   1763  11041   1590   8725   2145   5606    942  12708   1013   1244
    2013     50051     73   10    8644    0    0    9689   11752     4584   2058   5576    421   3846    714   3413   3916   1602    472    897    297    609    291   1869   2390   2461   2488   3981    377    603   2753    650   3783
    2012     44041    141    7   10293    0    0    7802    9611      615   3855   1438   2469    453   2106   1020   2128   1680   1293    675    410     48    160   1109   1310   1097   1676   8102   4451   2852    906   3949    239
    2011     53732    141   20   14521    1    0    9173    9798     2015   4085   2988   1319   2205   3965   2228   2589    805   1224    722    283    107   1499    392   2482    497   6936    447  10326    604   3921    108   1985
    2010     75684    309  456   21928    3    0   12639    6672     3509   3286   6300   2333   4326   3063   4395   2865   4484   3266   3401   2913   2960   3188   2037    187   4688   1087   4785   2708   5605   1876   2276    146
    2009     49176    113   13   22732    6    0    5661    7119     1290   4802   1672   3623    796   1989    165   2717    483    957    183    263     63    648    540   1641   1919   9236   1234   3961   2965   6723    649    657
    2008     68012    187   15   34929    7    0    6848   10350     3470   1362   5434   2251   4271   3460   3705   1779   1041   1086    457    139    138    643    564   1217   3689   7791   4784   9331   2036   3567   1429   4368
    2007     62092    157   17   34747    4    0    5964    7582      791   2576   2005   2960   5639   1290   1944   2477   1157    244    959    694    188    282   1272    452   8175    615  11367   3575   8435   1608   1505   1882
    2006     77577    255    9   45815   12    0    6588    8061     2694   7146   2021   5478   1899   1394   1394   3870   2053   3644    203    384     31    954   1100   4698   3074  10383   3275   9067   4369   5183   1852   1411
    2005     83432    330   44   54401   10    0    6441    7188     2077   1251   2043     92   8332    406   5737    268   4672    366   1357   1380   3163    802    733   4774   1313   7350   4954  13305   3434   5305   2984   7334
    2004     58646    291  147   44738   13    0    3619    2647      676   4097   3276   2011   2907   4173   2228   1993   1416    488    798    222    848    394   2951    735   8931   1563   9284    285   3291    322   4822    935
    2003     54822    338   45   43320   11    0    3260    2510     2374   2370    664    630   1597   3352   1440   1479    466    933    240    330    337    867    329   3008    696  10869   1496  10466    315   4890   1101   4573
    2002     72394    386  101   61753   11    0    3270    3723     5266    818   7967    532   4116   1050   4795    469   3784    423   1623    194   2033    947   5061   3885   7365   1880   9707   1995   3722    801   3040    921
    2001     75310    196   30   68078   11    0    2089    1907     1359   2090   1252   2800    697   6092    297   1721    281   1990    498    790    579   2854   1694   8387   3905   8916   6572   5809   3357   2608   6700   4062
    2000     72716     97   31   68915   12    1    1021     604     6459   1319   3766   2959   5220   1856   4703   2650   2363   2116    949    190    746   1749    818   6379   2701   9427   1876   2876   1638   4963   1391   3602
    1999     49155     90   24   46032   12    5     846     432      993    890   4005    244    385   2448   1601    332   3472    537    929     61   1636    145    228     95   6494    721   8426   1631   5796    699   6641    746
    1998     32461     70   33   31198    7    5     362     193      299   1261    144    970    569   3742    329   3979    135   1730    113   1245     50    392     46   2800   2035   4438    968   1276   1432   1159   2502    847
    1997     12300     32    0   11610    1    0     210      67      642    250    775     23   1508    132   1137    461    487    114    463    311    303     83    165    132    338    896    767    689    240   1472    366    546
    1996     10327     31    3    9359    0    0     265      54      519    473    242    199    412    630    543    682    424    253    151     49    144     81    249     98    855    231   1743    153   1054     98    946     98
    1995     10936     20    1    9139    0    0     459     140      130    432    279    357    245    541    252    143     56    152     34    216     40    469     38    431     38   2259    322   2099    486   1114    133    670
    1994      6372      7    2    5920    0    2     139      32      436    150    523     24    246     29    302     45    249      5    267      1    333      4   1016     26    749    339    449    331    225    344    160    119
    1993      7094     30    1    6765    1    0      62      15       22    401     60     99     24   2144     44    267     42     95     60     46     67    372    236    284    531    424   1227    257    214     24     87     67
    1992      4914     22    9    4544    1    0      21       5      180    158    223    355    944    110    232    190    137     28     86     18     19    285    176     80    195    692     58    280     18    264     37    149
    1991      5506     41    4    5000    2    0      19       6      124    121    171     72    239    182    376    133    188     85    186      2    248     56    824     13   1073    144    427    135    441     16    182     68
    1990      4962     23   16    4395    1    0       3       2       32    162     25    247    282    146     42    188     55    100      7     55      0    156     14    501    466    764    418    374    413    416     56     43
    1989      3421     28    1    3116    1    2       3       3      266     60    246     12    316     33    226      8     23     19     38     17     51     39     52     37    155    378    480    259    168    197     93    248
    1988      2523     20    6    2217    1    2       3       2      147    144    199    140     78     95     77     27     73     44     24      9     35     22    131     42    370    126    135     51    362     13    152     27
    1987      2782     20    2    2349    0    1       2       0       24     99     18    181     31     50     39     71     11    138      6     48     29     47     13    327    171    792     29    255     55    148     35    165
    1986      2776     10    2    2239    4    3       1       1       79      0     65      2    149      6     79     33     49     19     50      2     35     21    179    153    454     83    485    119    246    282    149     37
    1985      1821     13    1    1527    0    0       2       0        8     61     69    122     13     83     51     47     65     32      5      7      5     36     77    176    170    185    102    178    159     21     84     65
    1984      1518      1    0    1352    1    1       1       1       40    197     41     87     59     62     32     70     69     33     17     22      5     14      9     50     13    217      4    140      1    142      5    189
    1983      1622     30    0    1236    2    0       4       3      169     21    225     22    113     24     74     53     50      3     28      0     29     16     67     43    244     21     71     37    193     39     52     28
    1982      2711     24    3    2285    1    0       2       1       15    394      5    185      9    108     10     86    128    115      4     22      3     38     46    106     92    337     90    310    331     15    126    136
    1981      3807     10    6    3559    2    0       4       2      106     25     45    103   1245     39     47      5    173     45     13      6     43     18     22    126    196    235    118    755     78    236     65     63
    1980      2117      2    2    1974    0    0       2       0       10    164     21    157     57    309     50      6     27     62     33     12     20     12    125      5    216     22    394     52    118    136     87     22
    1979      2668      5    3    2423    0    0       1       0        3     76      2     29     13    111     20    175     12     42      0    247      5    427     12    259     40    384     71    129     90    215     51    255
    1978      3229      5    3    2960    1    0       2       0       11      8     20      2    272      3    135      1    101      2     26      0    212     19    134     92    435    207    247    223    427    549     48     55
    1977      2378      7    2    2125    2    0       1       0       77     27     85    290    231     91     31     37     29     54     45      1     19     26     64    143    515     95    215    140     67      0     92      4
    1976      1910     10    4    1781    1    0       2       0       11      0      1     34     26      8    224     30    280     82      1     16     16     34     10     68      1    288      2    543      1     30      0    204
    1975      1330     13    2    1224    1    1       0       0       30     48     11      5    162     26     41     13     16      0     36      1     48      0     20     17     66     55    184     30    265     54    187     15
    1974       916      2    2     840    0    0       0       0        0      0     40     66     20     53      1     94      2     18      7     19      2     58     12     95     55    135     49     17     86     40     29     18
    1973       868     21    0     769    1    0       0       0      125      5     13     20     17     62     36      1      4      5      3      1      1      1      2     57      8    174     26    157     22     14      0    114
    1972       895      3    0     855    0    0       0       0       20     22      7      1     16     11     57     43     44     14     38      1     26      5      3     17    107      1    280     10     56      2     70     44
    1971       814     14    0     720    1    0       0       0        2    106      7     58      1     35     12     25      4     30      7     11      4     50      1     91      4    110     87    118     30      3      5     13
    1970       554      0    3     486    0    1       0       0       37      4     20      2     97     12     69     14     20     11     17      4     13     11     29     43     22     42      8      3      5     40     10     21
    1969       728      1    1     657    0    0       0       0       33      8      2     11     56     15      4      7     20     10     10     13      2     35     28     23     68      5    207     73     88      0     10      0
    1968       386      0    1     320    0    0       0       0        7     15      4     30      0     27      0     40      0     21      0      4      0     39      2     56      2     12     15     94      0      9      4      5
    1967       238      0    1     165    1    0       0       0        5      0     14      3     40      1     38      2     24      7      2      1      7      0     10      0     35      6     16     22      2      0      3      0
    1966       319      0    3     224    0    0       0       0        1     26     26     23      2     22      3     20      4      9      5      5      0      2     32     22     16      4     18     31     19     13      8      8
    1965       255      0    0     225    0    0       0       0       40      4      9      6      1      2      5      2     11      0      2      5      1     10      4      7      1     25      3     64     11     24      3     15
    1964       351      1    1     318    0    1       0       0        0      8     11      8     22     10      4      3      9      1      3      0      1      0     18      3     14      0     71     19     78     39     15     14
    1963       194      0    1     178    0    1       0       0        0      0      0     15      0     11      6      5      0     12      1      7      2      1      5      6     10     30     36     21     15      6      1      4
    1962       329      4    1     312    0    0       0       0        6      7     32      4      8      1      7     10     24      3      1      2      2      4     18     13     15     19     15     10     10     64     47      7
    1961       257      4    1     206    0    0       0       0       16      5     32     14      9      6     11      1     10      2      3      1      0      2      6      1      3      0     52     20     29      7     26      1
    1960       168      0    1     122    1    0       5       1        0      6      3      6      7     11      2      5      1      3      1      5      0      9      2      6      2     34      3     11     11     35      4      1
    1959       291      0    2     262    0    0       0       0        4      0     33      0     32      1     28      0     20      0     14      1     19      7      9      4     33     18     23     17     12      6     10      0
    1958       274      0    3     257    0    0       0       0       10     12      2     37      0     14     24     13      3      1      3      0      0      4      6      5     17      1     43     16     31      3     29      0
    1957       418      0    4     289    0    0       0       0       11     38      7      8     15      9      4     28     31     20     17     12      5     32      2     17      0     13     14     41      3     59      6     26
    1956       302      0    1     173    0    0       0       0       34      2      6      4     43      1     23      3      7      5      6      0      6      1     11      2     24     10     30     19     16      6     25     18
    1955       599      0    8     409    0    0       0       0        2     35      7     24     17     59      6     28      0     16      4     36      3     12      3     50     40     80     29     50     35     12     38     13
    1954       561      1    1     374    1    0       0       0       17      9     19      8     29      7     17     13     23     18     12     24     28     24     20     30     28     43     37     88      0     34     16     17
    1953       739      0    3     532    0    0       0       0       18      6     20     10     59     51     58      3     19      6     10      2     15     18     39     22     62     18    101     35    102      2     50     13
    1952       653      0    5     525    0    0       0       0        0     64      4     93      2     41      1    112     16     39      6     22      2     35     10     38     23     47     12     53     12     10      1     10
    1951       736      0    0     624    0    0       0       0       52      4     60     11     77      4     39      3     29     29     26     15     17     12     19     15     54     24     24     27     10     74     38     73
    1950       678      2    7     526    1    2       0       0        7     49     24     41     24     21      7     40     22     12     38      9     44     17     29     35     43     23    120     14     17      8     30      4
    1949       563      1   26     456    0    0       0       0        4     20     17     11     10     44     20     44     11     32      0     24      3     43     25     67      3     48     10     39      1     41     14     32
    1948       412      1   21     289    0    0       0       0       11      7      7      5     36      5     13      3     18      9     12     11     10     10     37     20     45     10     64     14     20     19     18      8
    1947       170      0    4     111    0    0       0       0        3     15      8      3      3     14     10      7      2      9     18      1     11      8      2      9     10      5      5     11      3      4      9      0
    1946       104      2    9      61    0    0       0       0        2      2      0      2      0      6      5      3      3      3      3      3      5     11      0      7      0     15      5     19      0      7      0      3
    1945        74      0   24      39    0    0       0       0        3      4      0      0      5      1      6      0      0      2      0      0      2      1      1      8     16      1      6      4      9      4      1      0
    1944        81      0    9      60    0    0       0       0        0      6      1     15      0      5      0      3      0      5      1      6      0      9      0     13     11      4      0      1      0      0      0      1
    1943       180      0   11     129    0    0       0       0        5      0      0     14     35      7     29      0      2      0      3      7      0      9      6      7      3      7     15      9     11      3      3      5
    1942       305      1   16     227    1    0       0       0        7     13     12     13     41     20     30     12     12      4     11      0      3      5     12      5     36      0     11      1     28      1     25      3
    1941       291      0   27     191    1    0       0       0        1     27      9     17      3     38      0     19      3      7      0      8      0      6      0      7      1     68      0     27      4     33      5      8
    1940       257      0   13     155    1    0       0       0       19      5     16      1     19      7     33      4      5      2     16      1      6      2      7     14     28      9     15      6      0     17      6     19
    1939       292      0   11     193    2    1       0       0        3     23     34     14     14     26     22     11      6      8      9      2      4      1     16      6     17      8     16     20     15      1     12      4
    1938       376      0    8     279    0    0       0       0        9     14     20     69     35     19     13      7      4      5      2      6      1      8      3     16      6     41      5     46      3     22      8     14
    1937       279      0    2     196    0    0       0       0       30     10     14      1      7      3     16      0     17      8     20      0     27      3     10      8     21      1     21     11     18     18      4     11
    1936       331      1    2     250    0    0       0       0        5      7      5     17      2     53      3     15      2     16     10     11      8     16     18     42     18     16     11     14     10     12      9     11
    1935       350      0    2     280    0    1       0       0        1     13     28     13     24     24     15      9     13     12      1     12      6     12      7     36     10     60     10     26      2      5      0     11
    1934       313      0    2     249    0    0       0       0       10      3     40      2      9     20     24      9     15      3     16      0     32      4     28      3     33      6     14      3     25      2     11      1
    1933       340      0    1     260    0    0       0       0        0     27      1     13      0     53      7     14      2      3      2      4      2     21      1     41     10     44      3     53      7     20      9      3
    1932       243      0    2     163    0    0       0       0        7     17     38      5     33      8      3     19      5      9      3      3     10      3     10      1     15      6      3      4      5     16      0     20
    1931       441      1    2     348    1    0       0       0       32     17     10     26     16     19     14      8     20     13      5      9      0      5      8      3     35      1    117     18     38      2     24      1
    1930       348      0    5     251    0    1       0       0        8     11      1     29      6     26     13     19      4     21      2     19      1     14      4     25      5     33      3     34     11     12     21     26
    1929       328      0   17     253    0    3       0       0       12      7     36      4     12      2      6      0     12      1      9      1      8      1     15     12     38     19     30     18     24     33     23      5
    1928       190      0    6     135    0    0       0       0        0      8      0     35      0     20      1     11      3      5      1      0      2      3      5     16     25     19     12      6      4      5      8      1
    1927       145      0    9      95    0    0       0       0        5     16     21      4      5      5      0      4      4      2      1      2      1      2      1     12      7     18     10     14      3      4      0      4
    1926       152      0    4      90    0    0       0       0       12      1      6      0      8     11     31      0      3      2      0      0      1      0      8      6     19      4     15      1     11      3      8      2
    1925       106      0    1      66    1    0       0       0        4      6      1      7      1      4      3      4      1      4      1      1      1      2      1      9     12      6      6      2     12     11      6      1
    1924       105      0    7      66    0    1       0       0        2     10      4      3     16      2      6      1      3      3      2      1      6      4      3      1      7      4      4      1      1     11      5      5
    1923        50      0    1      37    0    0       0       0        1      1      3      0      0      1      1      1      2      0      2      0      2      0      2      1     16      0      3      3      5      2      2      2
    1922        37      0    1      20    0    0       0       0        2      3      0      3      1      1      0      1      0      4      0      0      1      3      0      3      0      5      2      0      2      3      3      0
    1921        53      0    1      27    0    0       0       0        1      1      1      1     10      0      6      1      0      0      0      0      0      0      2      0      5      3      6      8      1      6      1      0
    1920        32      0    1      21    0    0       0       0        0      0      1      1      3      1      6      9      3      0      2      0      0      0      0      1      0      0      3      0      2      0      0      0
    1919        38      0    4      23    0    0       0       0        3      0      0      0      2      1      2      2      1      3      0      1      2      1      0      3      2      8      0      5      0      1      1      0
    1918        41      0    2      31    0    0       0       0        0      0      4      0     12      3      2      0      0      1      0      0      0      1      4      0      6      0      1      2      0      3      1      1
    1917        80      0    4      64    0    0       0       0        0      4      6      6      0      2      2      1      1      6      1      1      0      1      1      3      1     17      9      8      2      0      5      3
    1916        94      0    2      74    0    0       0       0        4      1      2      5      0      5      7      3      1      5      2      2      4      7      3      4      1      3      0     17      1     11      0      6
    1915        82      0    5      61    0    0       0       0        0      4      6      2      0      6      4      3      5      1      0      0      0      0      4      1     14      1     14      1      5      8      3      0
    1914        55      0    2      29    0    0       0       0        0      4      0      2      0      0      0      2      1      1      1      0      1      2      0      1      1      5     10      5      6      6      1      6
    1913        70      0    3      39    0    0       0       0        5      0      7      2      7      0      3      4      2      1      6      7      1      2      0      2      3      3      2      6      3      1      0      3
    1912        73      0    3      40    0    0       0       0        5      4      3      1      2      2      6      8      4      1      3      1      2      0      1      1      3      0      5      0     15      2      2      2
    1911        59      0    0      47    0    0       0       0        0      3      1      1      0      5      0      6      0      6      0      9      0      2      0      9      1      0      1     10      3      2      0      0
    1910        39      0    0      36    0    0       0       0        2      1     10      1      3      1      2      1      5      0      2      0      3      0      0      0      2      0      2      2      2      0      0      0
    1909        64      0    2      57    0    0       0       0        3     13      1     10      2      0      9      5      1      0      0      0      0      0      1      0      0      3      7      4      2      1      1      1
    1908        91      0    5      71    0    0       0       0       11      8      4      3      4      4      2      3      0      1      1      1      0      4      0      5      0      6      6      8      2      6      1     11
    1907        92      0    0      77    0    0       0       0        0      2      4      0      8      2     22      1      6      0      0      1      0      0      2      0      6      1      9      6     17      2      3      0
    1906       102      0    5      86    0    0       0       0        2     11      0      5      2      8      2      4      1      1      0      2      0      3      1      6      4      7      2      9     11      3      3     15
    1905        61      0    1      56    0    0       0       0        3      3      9      0      1      2      2      0      3      0      0      1      0      3      0      1      0      5      0     16      8      2      1      1
    1904        45      0    3      36    0    0       0       0        4      0      1      0      3      0      1      2      4      0      2      0      1      0      3      0      6      7      2      3      5      0      1      0
    1903        38      0    0      33    0    0       0       0        0      8      2      1      0      0      0      2      0      0      0      2      1      0      1      2      0      6      1      7      3      1      1      0
    1902        50      0    3      42    0    0       0       0        0      0      1      1      7      0      3      0      2      0      1      2      1      0      0      0      3      1      5     10      1      8      0      4
    1901        29      0    2      22    0    0       0       0        0      1      1      2      1      0      0      2      1      1      0      0      0      0      0      1      0      2      6      1      8      0      2      0
    1900        26      0    5      16    0    0       0       0        0      0      0      3      2      1      1      0      0      2      0      4      0      0      0      0      0      3      0      5      1      2      0      2
    1899        45      0    0      30    0    0       0       0        0      0      0      0      3      0      1      0      2      3      5      1      9      6     10      1      0      0      2      1      1      0      0      0
    1898         9      0    1       5    0    0       0       0        0      1      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      6      2      0      0
    1897         1      0    0       1    0    0       0       0        0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      1      0      0      0      0      0      0      0      0
    1896         7      0    0       6    0    0       0       0        0      1      0      0      0      0      1      1      0      0      0      0      0      0      0      0      2      0      0      0      0      0      0      2
    1895         9      0    0       7    0    0       0       0        0      0      0      3      2      0      0      0      0      0      0      0      0      1      0      0      0      0      1      0      0      0      2      0
    1894         4      0    0       4    0    0       0       0        0      1      0      0      0      0      1      0      0      0      0      0      0      0      0      0      0      0      0      0      1      1      0      0
    1893        13      0    1      10    0    0       0       0        1      1      1      0      2      3      1      0      0      1      0      0      0      0      1      1      0      0      0      0      1      0      0      0
    1892        12      0    0       3    0    0       0       0        0      5      0      0      0      3      0      1      0      0      0      0      0      1      0      0      1      0      0      0      0      0      1      0
    1891         6      0    0       2    0    0       0       0        0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      1      4      1
    1890         1      0    0       0    0    0       0       0        0      0      0      0      0      0      1      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0
    1887         2      0    0       2    0    0       0       0        0      1      0      0      0      0      0      1      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0
    1881         1      0    1       0    0    0       0       0        0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      1      0      0      0      0      0      0
    1880         1      0    0       1    0    0       0       0        0      0      0      0      0      0      0      0      1      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0
    1878         2      0    0       1    0    0       0       0        0      0      1      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      1      0      0      0
    1874         1      0    0       0    0    0       0       0        0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      1      0      0      0
    1873         1      0    0       0    0    0       0       0        0      0      0      0      0      0      0      0      0      0      0      0      0      1      0      0      0      0      0      0      0      0      0      0
    1869         1      0    0       1    0    0       0       0        0      0      0      0      0      0      1      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0
    
    P-L       2368      0    1    2318    0    0       7       7        0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0   2083      0    285      0      0      0      0
    T-1        746      0    0     744    0    0       1       1        0      0      0      0      0    706      0      0     40      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0
    T-2       1396      0    0    1385    0    0       2       2        0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0   1396      0      0      0      0      0      0
    T-3       1430      0    0    1409    0    0       4       4        0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0      0     17   1413      0      0      0      0
    
    Totals 1238374   3748 1428  729541  156   35  107187  110461    50656  62087  56847  43909  57871  58179  46934  48378  35522  29359  17711  15926  17268  28563  26769  59789  69207 108168  93287  97851  58129  66707  46551  42706
    
                                                                      A      B      C      D      E      F      G      H      J      K      L      M       N      O      P      Q      R      S      T      U      V      W      X      Y
    
    Designations can be deleted for a number of reasons (non-existence of reported object, identity with star or galaxy, etc.). Omitted designations are designations assigned and deleted before publication.