MPEC 2008-U90 : 2007 EM88
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M.P.E.C. 2008-U90 Issued 2008 Oct. 29, 18:40 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 EM88
Revision to MPEC 2007-F16
Additional Observations:
K07E88M C2008 10 25.42992 09 11 25.09 +16 40 49.8 21.8 V EU090H55
K07E88M C2008 10 25.44246 09 11 27.29 +16 40 42.9 21.7 V EU090H55
K07E88M C2008 10 25.45468 09 11 29.45 +16 40 35.9 21.8 V EU090H55
K07E88M C2008 10 29.43384 09 23 23.88 +16 02 11.0 21.8 V EU090H55
K07E88M C2008 10 29.45251 09 23 27.14 +16 01 59.7 21.7 V EU090H55
Observer details:
H55 Astronomical Research Observatory, Charleston. Observer R. Holmes.
Measurer H. Devore. 0.81-m f/4.0 astrograph + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
081025 H55 24.1+ 3.3- 081029 H55 23.5+ 3.8- MPO119716 -0.021 day
Orbital elements:
2007 EM88 Earth MOID = 0.2221 AU
Epoch 2008 Nov. 30.0 TT = JDT 2454800.5 MPC
M 32.78744 (2000.0) P Q
n 0.46463759 Peri. 336.99422 +0.56876838 -0.82022573
a 1.6509217 Node 78.28944 +0.76399461 +0.49934099
e 0.2675234 Incl. 3.57707 +0.30465517 +0.27908482
P 2.12 H 19.3 G 0.15 U 5
Residuals in seconds of arc
070315 691 0.2- 0.3- 070316 673 1.7+ 0.4- 070407 G96 0.5+ 0.7-
070315 691 0.2+ 0.4- 070317 291 0.3- 0.1+ 070407 G96 0.2- 0.2-
070315 691 0.8- 0.3- 070317 291 0.5+ 0.2+ 070411 291 0.1- 0.5-
070315 291 0.3+ 0.1- 070317 291 0.2- 0.1- 070411 291 0.3- 0.6+
070315 291 0.1+ 0.2- 070320 291 0.0 0.2+ 070411 291 0.4- 0.7+
070315 291 0.0 0.1- 070320 291 0.1- 0.1+ 070414 291 0.9+ 0.1+
070316 G96 0.0 0.3- 070320 291 0.0 0.3+ 070414 291 0.7- 0.4-
070316 G96 0.2- 0.3- 070326 291 0.1- 0.2- 070414 291 0.5+ 0.3+
070316 G96 0.1+ 0.3- 070326 291 0.0 0.3- 070422 H55 1.1+ 1.5-
070316 G96 0.0 0.1- 070326 291 0.2- 0.2+ 070422 H55 0.3- 1.1+
070316 291 0.2+ 0.5+ 070326 G96 0.2+ 0.6- 081025 H55 0.5+ 0.0
070316 291 0.1- 0.3+ 070326 G96 0.3+ 0.5- 081025 H55 0.3- 0.2+
070316 291 0.1- 0.4+ 070326 G96 0.1- 0.4- 081025 H55 0.8- 0.1+
070316 673 0.8+ 0.3+ 070326 G96 0.0 0.4- 081029 H55 0.3+ 0.3+
070316 673 0.2+ 0.5+ 070407 G96 0.1+ 0.1- 081029 H55 0.4+ 0.2-
Ephemeris:
2007 EM88 a,e,i = 1.65, 0.27, 4 q = 1.2093
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2008 10 21 08 57.73 +17 22.4 1.011 1.234 75.9 51.5 21.7
2008 10 31 09 27.97 +15 46.9 0.986 1.252 78.5 51.0 21.6
2008 11 10 09 55.86 +14 08.3 0.959 1.274 81.6 50.2 21.6
2008 11 20 10 21.27 +12 32.2 0.929 1.300 85.3 49.2 21.6
2008 11 30 10 44.04 +11 04.6 0.896 1.329 89.7 47.9 21.5
2008 12 10 11 03.90 +09 51.2 0.860 1.361 94.9 46.1 21.4
2008 12 20 11 20.56 +08 57.0 0.820 1.395 100.9 43.8 21.3
2008 12 30 11 33.50 +08 27.4 0.779 1.430 107.9 40.9 21.1
2009 01 09 11 42.13 +08 27.1 0.739 1.466 116.0 37.1 21.0
2009 01 19 11 45.84 +08 59.0 0.701 1.503 125.5 32.2 20.8
2009 01 29 11 44.05 +10 03.5 0.670 1.540 136.2 26.3 20.6
2009 02 08 11 36.73 +11 34.6 0.651 1.577 148.2 19.2 20.3
2009 02 18 11 24.78 +13 18.5 0.648 1.614 160.7 11.7 20.1
2009 02 28 11 10.13 +14 56.0 0.665 1.650 170.6 5.6 20.0
2009 03 10 10 55.59 +16 08.6 0.704 1.686 166.5 7.9 20.2
2009 03 20 10 43.66 +16 47.0 0.764 1.720 155.4 14.0 20.7
2009 03 30 10 35.80 +16 51.2 0.843 1.754 144.3 19.4 21.1
2009 04 09 10 32.45 +16 26.2 0.937 1.786 134.1 23.7 21.5
2009 04 19 10 33.25 +15 38.8 1.044 1.817 125.0 26.9 21.9
Gareth V. Williams (C) Copyright 2008 MPC M.P.E.C. 2008-U90
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