MPEC 2017-B82 : COMET P/2010 EY90 = 2017 B1 (Lemmon)
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M.P.E.C. 2017-B82 Issued 2017 Jan. 27, 22:43 UT The Minor Planet Electronic Circulars contain information on unusual minor planets and routine data on comets. They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. Prepared using the Tamkin Foundation Computer Network MPC@CFA.HARVARD.EDU URL https://www.minorplanetcenter.net/ ISSN 1523-6714 COMET P/2010 EY90 = 2017 B1 (Lemmon) Observations: PK10E90Y C2010 03 14.23752 10 22 46.52 +08 45 32.8 19.9 TrEB082G96 PK10E90Y C2010 03 14.24586 10 22 46.16 +08 45 33.6 20.0 TrEB082G96 PK10E90Y C2010 03 14.25428 10 22 45.76 +08 45 35.4 20.1 TrEB082G96 PK10E90Y C2010 03 14.26266 10 22 45.40 +08 45 36.2 20.2 TrEB082G96 PK10E90Y C2010 03 15.25493 10 22 02.49 +08 47 59.4 20.4 TrEB082G96 PK10E90Y C2010 03 15.26327 10 22 02.13 +08 48 00.5 20.1 TrEB082G96 PK10E90Y C2010 03 15.27163 10 22 01.77 +08 48 01.3 21.0 TrEB082G96 PK10E90Y C2010 03 15.27998 10 22 01.38 +08 48 03.1 20.6 TrEB082G96 PK10E90Y C2010 04 07.25451 10 10 12.61 +09 19 56.5 20.2 TrEB082G96 PK10E90Y C2010 04 07.26054 10 10 12.46 +09 19 56.1 20.2 TrEB082G96 PK10E90Y C2010 04 07.26661 10 10 12.36 +09 19 57.3 20.5 TrEB082G96 PK10E90Y C2010 04 07.27266 10 10 12.25 +09 19 56.9 20.3 TrEB082G96 PK10E90Y C2010 04 07.31099 10 10 11.54 +09 19 57.3 20.4 TrEB082G96 PK10E90Y C2010 04 07.31192 10 10 11.56 +09 19 57.6 20.2 TrEB082G96 PK10E90Y C2010 04 07.31286 10 10 11.51 +09 19 57.4 20.1 TrEB082G96 PK10E90Y C2010 04 07.31381 10 10 11.50 +09 19 57.5 20.1 TrEB082G96 PK10E90Y C2010 05 17.15552 10 17 53.80 +07 58 17.3 20.4 TrEB082G96 PK10E90Y C2010 05 17.16142 10 17 54.06 +07 58 15.5 20.4 TrEB082G96 PK10E90Y C2010 05 17.16736 10 17 54.24 +07 58 14.4 20.5 TrEB082G96 PK10E90Y C2010 05 17.17330 10 17 54.49 +07 58 12.7 20.5 TrEB082G96 PK10E90Y S2010 05 18.31917 10 18 38.24 +07 53 16.6 LEB082C51 PK10E90Y s2010 05 18.31917 1 - 5268.9943 + 4212.6146 + 1479.0308 EB082C51 PK10E90Y S2010 05 18.45147 10 18 43.39 +07 52 45.4 LEB082C51 PK10E90Y s2010 05 18.45147 1 - 5279.8606 + 4200.8792 + 1474.9000 EB082C51 PK10E90Y S2010 05 18.58378 10 18 48.55 +07 52 07.5 LEB082C51 PK10E90Y s2010 05 18.58378 1 - 5290.7525 + 4189.0993 + 1469.1696 EB082C51 PK10E90Y S2010 05 18.78230 10 18 56.27 +07 51 16.8 LEB082C51 PK10E90Y s2010 05 18.78230 1 - 5296.1268 + 4169.9771 + 1503.5570 EB082C51 PK10E90Y S2010 05 18.84839 10 18 58.82 +07 50 58.9 LEB082C51 PK10E90Y s2010 05 18.84839 1 - 5311.8523 + 4165.1385 + 1461.3733 EB082C51 PK10E90Y S2010 05 18.91460 10 19 01.41 +07 50 40.7 LEB082C51 PK10E90Y s2010 05 18.91460 1 - 5306.5876 + 4158.1667 + 1499.9562 EB082C51 PK10E90Y S2010 05 18.98069 10 19 04.04 +07 50 22.4 LEB082C51 PK10E90Y s2010 05 18.98069 1 - 5322.4711 + 4153.0364 + 1457.1146 EB082C51 PK10E90Y S2010 05 19.04691 10 19 06.54 +07 50 05.9 LEB082C51 PK10E90Y s2010 05 19.04691 1 - 5317.4489 + 4145.7992 + 1494.5785 EB082C51 PK10E90Y S2010 05 19.17921 10 19 11.89 +07 49 32.0 LEB082C51 PK10E90Y s2010 05 19.17921 1 - 5327.9097 + 4133.8587 + 1489.8243 EB082C51 PK10E90Y S2010 05 19.31151 10 19 17.03 +07 48 55.2 LEB082C51 PK10E90Y s2010 05 19.31151 1 - 5338.2341 + 4122.0585 + 1486.1095 EB082C51 PK10E90Y S2010 05 19.44382 10 19 22.34 +07 48 20.0 LEB082C51 PK10E90Y s2010 05 19.44382 1 - 5348.8870 + 4110.1411 + 1482.0479 EB082C51 PK17B010 C2017 01 07.48062 12 24 28.05 -04 28 08.3 20.3 TqEB082G96 PK17B010 C2017 01 07.48661 12 24 28.27 -04 28 09.9 20.7 TqEB082G96 PK17B010 C2017 01 07.49090 12 24 28.35 -04 28 11.5 20.3 TqEB082G96 PK17B010 C2017 01 07.49518 12 24 28.54 -04 28 13.4 qEB082G96 PK17B010 C2017 01 26.59058 12 33 28.390-06 10 50.82 21.0 TLEB082F51 PK17B010 C2017 01 26.61580 12 33 28.778-06 10 57.51 21.3 TLEB082F51 PK17B010 C2017 01 26.62837 12 33 28.972-06 11 00.76 21.1 TLEB082F51 PK17B010 KC2017 01 27.65488 12 33 45.84 -06 15 24.1 20.5 TtEB082474 PK17B010 KC2017 01 27.65840 12 33 45.89 -06 15 24.7 tEB082474 PK17B010 KC2017 01 27.66192 12 33 45.95 -06 15 25.7 20.4 TtEB082474 PK17B010 KC2017 01 27.66544 12 33 45.92 -06 15 27.2 20.6 TtEB082474 Observer details: 474 Mount John Observatory, Lake Tekapo. Observers A. C. Gilmore, P. M. Kilmartin. Measurer P. M. Kilmartin. 1.0-m f/7.7 reflector + CCD. F51 Pan-STARRS 1, Haleakala. Observers B. Gibson, T. Goggia, S. Kahale, T. Lowe, A. Schultz, M. Willman. Measurers K. Chambers, S. Chastel, L. Denneau, H. Flewelling, M. Huber, E. Lilly, E. Magnier, R. Wainscoat, C. Waters, R. Weryk. 1.8-m Ritchey-Chretien + CCD. G96 Mt. Lemmon Survey. Observer R. A. Kowalski. Measurers E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. G. Matheny, R. L. Seaman, F. C. Shelly. 1.5-m reflector + 10K CCD. Observational details for the 2010 observations may be found in the Minor Planet Circulars. Orbital elements: P/2010 EY90 = 2017 B1 (Lemmon) Epoch 2010 Nov. 20.0 TT = JDT 2455520.5 T 2010 Dec. 3.62587 TT MPCW q 2.4959560 (2000.0) P Q n 0.14604986 Peri. 256.49376 -0.66285085 +0.74738377 a 3.5710995 Node 331.82677 -0.64457111 -0.60032161 e 0.3010679 Incl. 5.49792 -0.38099453 -0.28466027 P 6.75 From 41 observations 2010 Mar. 14-2017 Jan. 27, mean residual 0".5. P/2010 EY90 = 2017 B1 (Lemmon) Epoch 2017 Sept. 4.0 TT = JDT 2458000.5 T 2017 Aug. 26.73606 TT MPCW q 2.4985654 (2000.0) P Q n 0.14596986 Peri. 255.97792 -0.67012708 +0.74086549 a 3.5724041 Node 331.78243 -0.63870926 -0.60663774 e 0.3005927 Incl. 5.49236 -0.37812721 -0.28828628 P 6.75 From 41 observations 2010 Mar. 14-2017 Jan. 27, mean residual 0".5. P/2010 EY90 = 2017 B1 (Lemmon) Epoch 2024 May 10.0 TT = JDT 2460440.5 T 2024 May 27.12428 TT MPCW q 2.5101536 (2000.0) P Q n 0.14559849 Peri. 255.79104 -0.67296247 +0.73829008 a 3.5784762 Node 331.74969 -0.63640812 -0.60911328 e 0.2985412 Incl. 5.48818 -0.37696979 -0.28967010 P 6.77 From 41 observations 2010 Mar. 14-2017 Jan. 27, mean residual 0".5. P/2010 EY90 = 2017 B1 (Lemmon) Epoch 2017 Feb. 16.0 TT = JDT 2457800.5 T 2017 Aug. 27.00812 TT MPCW q 2.4981634 (2000.0) P Q n 0.14593594 Peri. 256.02512 -0.66907947 +0.74181340 a 3.5729576 Node 331.81623 -0.63954929 -0.60570445 e 0.3008136 Incl. 5.49508 -0.37856223 -0.28781071 P 6.75 From 41 observations 2010 Mar. 14-2017 Jan. 27, mean residual 0".5. Residuals in seconds of arc 100314 G96 0.1- 0.1+ 100407 G96 0.4- 0.2+ 100519 C51 1.0+ 1.8+ 100314 G96 0.2+ 0.4- 100407 G96 0.3- 0.3+ 100519 C51 0.5- 0.4+ 100314 G96 0.1- 0.2+ 100517 G96 1.2- 0.1- 100519 C51 0.2+ 0.7+ 100314 G96 0.1+ 0.2- 100517 G96 0.5- 0.4- 170107 G96 0.4+ 0.3- 100315 G96 0.1- 0.0 100517 G96 1.0- 0.0 170107 G96 0.3+ 0.4+ 100315 G96 0.0 0.0 100517 G96 0.5- 0.2- 170107 G96 0.9- 0.4+ 100315 G96 0.2+ 0.4- 100518 C51 0.5+ 1.3- 170107 G96 0.4- 0.1+ 100315 G96 0.1- 0.2+ 100518 C51 (1.0+ 2.2+) 170126 F51 0.1+ 0.1- 100407 G96 0.7+ 0.0 100518 C51 1.3+ 0.9- 170126 F51 0.1+ 0.1- 100407 G96 0.0 0.5- 100518 C51 0.9+ 0.9+ 170126 F51 0.1+ 0.1- 100407 G96 0.2+ 0.6+ 100518 C51 0.4+ 0.5+ 170127 474 0.2- 0.2- 100407 G96 0.1+ 0.2+ 100518 C51 0.2+ 0.1- 170127 474 0.2- 0.1+ 100407 G96 0.4- 0.1+ 100518 C51 0.7+ 0.8- 170127 474 0.1- 0.1+ 100407 G96 0.1+ 0.4+ 100519 C51 0.9- 0.3+ 170127 474 1.3- 0.5- Ephemeris: P/2010 EY90 (Lemmon) Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2 2016 12 28 12 16 55.0 -03 18 22 2.6600 2.8560 91.3 20.1 20.7 ... 2017 01 12 12 27 11.6 -04 55 28 2.4210 2.8183 103.5 19.8 20.4 ... 2017 01 20 12 31 08.8 -05 39 25 2.2983 2.7988 110.5 19.2 20.3 ... 2017 01 26 12 33 18.0 -06 08 11 2.2096 2.7843 115.9 18.5 20.2 2017 01 27 12 33 35.2 -06 12 36 2.1952 2.7819 116.8 18.4 20.2 2017 01 28 12 33 51.1 -06 16 55 2.1809 2.7796 117.7 18.3 20.1 ... 2017 02 03 12 34 59.0 -06 40 17 2.0975 2.7654 123.4 17.3 20.0 ... 2017 02 11 12 35 13.7 -07 04 33 1.9939 2.7470 131.3 15.7 19.9 ... 2017 02 26 12 31 40.4 -07 27 02 1.8295 2.7136 146.9 11.5 19.6 Gareth V. Williams (C) Copyright 2017 MPC M.P.E.C. 2017-B82


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