MPEC 2010-D84 : 2007 EF
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M.P.E.C. 2010-D84 Issued 2010 Feb. 26, 14:20 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Commission 20 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 http://www.cfa.harvard.edu/iau/mpc.html ISSN 1523-6714
2007 EF
Revision to MPEC 2007-E32
Additional Observations:
K07E00F C2010 02 25.52249 17 52 30.57 -12 40 54.4 19.7 R ED084926
K07E00F C2010 02 25.52426 17 52 29.38 -12 40 18.8 19.7 R ED084926
K07E00F C2010 02 25.52603 17 52 28.14 -12 39 44.3 19.4 R ED084926
K07E00F C2010 02 26.49642 17 41 29.95 -07 02 24.7 19.8 R ED084926
K07E00F C2010 02 26.49819 17 41 28.60 -07 01 46.4 19.6 R ED084926
K07E00F C2010 02 26.49997 17 41 27.28 -07 01 07.5 19.6 R ED084926
K07E00F C2010 02 26.50175 17 41 25.97 -07 00 28.8 19.1 R ED084926
K07E00F C2010 02 26.50353 17 41 24.66 -06 59 50.1 19.2 R ED084926
K07E00F C2010 02 26.50530 17 41 23.38 -06 59 11.5 19.3 R ED084926
K07E00F C2010 02 26.51574 17 41 15.59 -06 55 22.0 19.9 R ED084926
K07E00F C2010 02 26.51752 17 41 14.26 -06 54 42.6 19.8 R ED084926
K07E00F C2010 02 26.51928 17 41 12.95 -06 54 04.0 19.9 R ED084926
K07E00F C2010 02 26.52106 17 41 11.62 -06 53 25.0 19.7 R ED084926
K07E00F C2010 02 26.52285 17 41 10.29 -06 52 45.8 19.6 R ED084926
K07E00F C2010 02 26.52462 17 41 08.96 -06 52 07.0 19.7 R ED084926
K07E00F C2010 02 26.52639 17 41 07.65 -06 51 28.2 19.3 R ED084926
K07E00F C2010 02 26.52817 17 41 06.33 -06 50 49.1 19.6 R ED084926
K07E00F C2010 02 26.52994 17 41 04.99 -06 50 10.2 19.6 R ED084926
K07E00F C2010 02 26.53172 17 41 03.67 -06 49 30.9 19.4 R ED084926
K07E00F C2010 02 26.53350 17 41 02.35 -06 48 52.2 19.7 R ED084926
K07E00F C2010 02 26.53528 17 41 01.02 -06 48 13.0 19.5 R ED084926
Observer details:
926 Tenagra II Observatory. Observers P. R. Holvorcem, M. Schwartz. Measurer
P. R. Holvorcem. 0.81-m f/7 Ritchey-Chretien + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
100225 926 0.21- 0.07+ 100226 926 0.20- 0.04+ MPO119708 -0.028 day
Orbital elements:
2007 EF PHA, Earth MOID = 0.0248 AU
Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 MPC
M 25.23397 (2000.0) P Q
n 1.32587038 Peri. 226.02795 +0.89152785 -0.43198775
a 0.8206072 Node 158.41716 +0.44203673 +0.89540185
e 0.4098302 Incl. 21.74064 -0.09890206 +0.10789861
P 0.74 H 21.5 G 0.15 U 4
Residuals in seconds of arc
070309 G96 0.3+ 0.2- 070314 673 0.3+ 0.5+ 100225 926 0.0 0.5+
070309 G96 0.3+ 0.1- 070314 104 (1.7+ 0.3+) 100225 926 0.1- 0.2+
070309 G96 0.0 0.0 070314 104 (3.1+ 1.0-) 100226 926 0.8+ 0.4+
070309 G96 0.1+ 0.1- 070315 118 0.5+ 0.5- 100226 926 0.2+ 0.0
070309 G96 0.1+ 0.3- 070315 118 0.1+ 0.9- 100226 926 0.1+ 0.1-
070309 G96 0.4+ 0.1- 070315 118 0.3+ 0.1- 100226 926 0.2+ 0.3-
070309 G96 0.0 0.1- 070315 235 0.2+ 0.2- 100226 926 0.3+ 0.6-
070309 G96 0.1+ 0.3- 070329 693 0.3- 0.3+ 100226 926 0.8+ 0.8-
070309 J95 0.2- 0.8+ 070329 693 0.1+ 0.0 100226 926 0.1+ 0.0
070309 J95 0.3- 0.6- 070329 693 0.1- 0.3+ 100226 926 0.0 0.3+
070309 J95 0.4+ 0.7+ 070404 J95 0.5+ 0.2- 100226 926 0.0 0.3+
070309 J95 0.5+ 0.9- 070404 J95 0.4- 0.5+ 100226 926 0.1- 0.3+
070309 J95 0.0 0.1+ 070404 J95 0.4+ 0.0 100226 926 0.1- 0.2+
070310 J95 0.4- 0.2+ 070415 734 (2.5+ 0.5-) 100226 926 0.3- 0.2+
070310 J95 0.3+ 0.1+ 070415 734 0.6+ 0.5- 100226 926 0.1- 0.1+
070310 J95 0.3- 0.1+ 070415 734 0.0 0.2+ 100226 926 0.0 0.1+
070313 J95 1.0- 0.2+ 070416 G96 1.4+ 1.2+ 100226 926 0.3- 0.1+
070313 J95 0.4+ 0.9- 070416 G96 0.9+ 0.2- 100226 926 0.2- 0.3+
070314 673 0.4- 0.6+ 070416 G96 1.1+ 0.2+ 100226 926 0.1- 0.1-
070314 673 0.2+ 0.0 070416 G96 0.7+ 0.2- 100226 926 0.1- 0.0
070314 673 0.5+ 0.2+ 100225 926 0.7- 0.3-
Ephemeris:
2007 EF a,e,i = 0.82, 0.41, 22 q = 0.4843
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2010 02 23 18 18.01 -24 27.2 0.0782 0.953 60.0 115.9 20.4
2010 03 05 16 09.13 +35 49.1 0.0650 1.010 104.3 72.2 18.1
2010 03 15 13 21.93 +61 15.7 0.123 1.057 117.9 56.2 19.1
2010 03 25 11 43.85 +62 46.2 0.196 1.096 115.3 55.3 20.2
2010 04 04 11 03.40 +60 42.7 0.272 1.124 110.5 56.4 21.0
2010 04 14 10 48.49 +58 07.0 0.347 1.144 105.3 57.7 21.6
2010 04 24 10 46.03 +55 25.8 0.418 1.155 100.1 59.0 22.0
Timothy B. Spahr (C) Copyright 2010 MPC M.P.E.C. 2010-D84
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