MPEC 2008-D04 : 2007 DA
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M.P.E.C. 2008-D04 Issued 2008 Feb. 16, 21:41 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 DA
Revision to MPEC 2007-D12
Additional Observations:
K07D00A C2008 02 15.81959 07 01 54.43 +52 42 17.3 ED004J95
K07D00A C2008 02 15.82048 07 01 56.16 +52 41 59.1 17.9 R ED004J95
K07D00A C2008 02 15.84836 07 02 48.54 +52 32 22.0 ED004J95
K07D00A C2008 02 15.84925 07 02 50.23 +52 32 03.3 ED004J95
K07D00A C2008 02 15.85014 07 02 51.86 +52 31 45.1 17.8 R ED004J95
K07D00A C2008 02 16.80000 07 26 20.24 +47 44 22.1 ED004J95
K07D00A C2008 02 16.80295 07 26 23.42 +47 43 36.7 ED004J95
K07D00A C2008 02 16.80577 07 26 26.42 +47 42 53.6 17.8 R ED004J95
Observer details:
J95 Great Shefford. Observer P. Birtwhistle. 0.40-m f/6.0 Schmidt-Cassegrain
+ CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
080215 J95 0.08- 0.00+ 080216 J95 0.07- 0.01+ MPO118200 +0.0045 day
Orbital elements:
2007 DA Earth MOID = 0.0200 AU
Epoch 2007 Oct. 27.0 TT = JDT 2454400.5 MPC
M 309.07272 (2000.0) P Q
n 0.97230715 Peri. 261.68128 +0.94281696 -0.33053005
a 1.0090989 Node 117.61052 +0.32170651 +0.86868197
e 0.5736259 Incl. 2.77923 +0.08718428 +0.36897361
P 1.01 H 22.4 G 0.15 U 4
Residuals in seconds of arc
070216 703 0.2- 0.3+ 070216 595 0.7+ 0.4+ 070221 448 0.4- 0.0
070216 703 0.4- 0.8- 070216 595 0.1- 0.6+ 070222 703 0.4+ 0.5-
070216 703 0.6+ 0.0 070216 595 0.6+ 0.4+ 070222 703 0.5- 0.5-
070216 703 (0.5- 1.6+) 070216 595 0.5+ 0.3+ 070222 703 0.3+ 0.1-
070216 703 0.1- 0.6+ 070216 473 0.9- 0.3+ 070222 703 1.0- 0.1+
070216 703 0.3+ 0.3- 070216 473 0.6- 0.1- 070225 448 0.0 0.2-
070216 703 0.6- 0.5- 070216 473 0.1- 0.1+ 070225 448 0.0 0.0
070216 703 0.5+ 0.6- 070217 673 1.0+ 0.1- 070225 448 0.7- 0.0
070216 703 0.8+ 0.2+ 070217 673 (2.2+ 0.3-) 070309 G96 0.1- 0.1-
070216 703 0.3- 0.2+ 070217 673 (3.5+ 0.5-) 070309 G96 0.1+ 0.1+
070216 703 1.0- 0.3+ 070217 673 0.0 0.7+ 070309 G96 0.1+ 0.2+
070216 703 1.3- 0.8- 070221 H45 0.1+ 0.2+ 070309 G96 0.1+ 0.1+
070216 703 0.1+ 0.4- 070221 H45 0.1+ 0.0 080215 J95 0.1- 0.0
070216 703 0.3- 0.7- 070221 H45 1.2+ 0.0 080215 J95 0.3+ 0.3+
070216 703 0.3- 0.1- 070221 H45 0.7+ 0.9- 080215 J95 0.3- 0.1+
070216 703 0.2+ 0.1+ 070221 H45 0.2- 0.1+ 080215 J95 0.1+ 0.2-
070216 118 (0.2+ 1.9-) 070221 H45 0.1+ 0.1+ 080215 J95 0.2- 0.0
070216 118 0.1- 0.5+ 070221 H45 0.3- 0.5+ 080216 J95 0.1+ 0.2-
070216 118 0.1+ 0.2+ 070221 H45 0.7+ 0.2+ 080216 J95 0.2+ 0.2-
070216 595 1.0+ 0.4+ 070221 448 0.0 0.1+ 080216 J95 0.1- 0.0
070216 595 0.5- 0.1- 070221 448 0.1+ 0.2-
Ephemeris:
2007 DA a,e,i = 1.01, 0.57, 3 q = 0.4303
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2008 02 14 04 50.66 +65 02.8 0.0313 0.998 108.7 69.6 17.3
2008 02 15 06 25.24 +58 02.3 0.0384 1.008 120.8 57.3 17.4
2008 02 16 07 07.40 +51 41.2 0.0469 1.018 128.4 49.5 17.6
2008 02 17 07 29.79 +46 54.3 0.0561 1.027 133.4 44.4 17.9
2008 02 18 07 43.49 +43 20.6 0.0657 1.037 136.6 41.0 18.2
2008 02 19 07 52.71 +40 38.1 0.0757 1.046 138.7 38.6 18.4
2008 02 20 07 59.36 +38 31.1 0.0858 1.056 140.0 37.0 18.7
2008 02 21 08 04.41 +36 49.5 0.0961 1.065 140.9 35.8 18.9
2008 02 22 08 08.40 +35 26.4 0.106 1.074 141.4 35.0 19.1
2008 02 23 08 11.66 +34 17.2 0.117 1.083 141.7 34.5 19.3
2008 02 24 08 14.39 +33 18.5 0.128 1.092 141.7 34.1 19.5
2008 02 25 08 16.73 +32 28.1 0.138 1.101 141.6 33.9 19.7
2008 02 26 08 18.78 +31 44.2 0.149 1.110 141.4 33.8 19.9
2008 02 27 08 20.61 +31 05.6 0.160 1.119 141.1 33.8 20.1
2008 02 28 08 22.26 +30 31.2 0.171 1.128 140.7 33.8 20.2
2008 02 29 08 23.77 +30 00.4 0.181 1.136 140.3 33.9 20.4
2008 03 01 08 25.18 +29 32.5 0.192 1.145 139.8 34.0 20.5
2008 03 02 08 26.50 +29 07.1 0.203 1.153 139.3 34.1 20.7
2008 03 03 08 27.76 +28 43.8 0.215 1.161 138.7 34.3 20.8
2008 03 04 08 28.96 +28 22.2 0.226 1.169 138.1 34.5 20.9
2008 03 05 08 30.12 +28 02.2 0.237 1.178 137.5 34.7 21.1
2008 03 06 08 31.25 +27 43.5 0.248 1.186 136.9 34.9 21.2
2008 03 07 08 32.35 +27 25.9 0.260 1.194 136.3 35.1 21.3
2008 03 08 08 33.43 +27 09.4 0.271 1.201 135.6 35.3 21.4
2008 03 09 08 34.49 +26 53.7 0.282 1.209 135.0 35.5 21.5
2008 03 10 08 35.55 +26 38.7 0.294 1.217 134.3 35.8 21.6
2008 03 11 08 36.60 +26 24.5 0.305 1.224 133.6 36.0 21.7
2008 03 12 08 37.64 +26 10.8 0.317 1.232 132.9 36.2 21.8
2008 03 13 08 38.69 +25 57.7 0.329 1.239 132.3 36.4 21.9
2008 03 14 08 39.73 +25 45.0 0.341 1.246 131.6 36.6 22.0
2008 03 15 08 40.78 +25 32.8 0.352 1.254 130.9 36.9 22.1
Gareth V. Williams (C) Copyright 2008 MPC M.P.E.C. 2008-D04
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