MPEC 2013-A68 : 1989 VB
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M.P.E.C. 2013-A68 Issued 2013 Jan. 12, 03:13 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 https://www.minorplanetcenter.net/ ISSN 1523-6714
1989 VB
Additional Observations:
J89V00B C2012 10 20.41887 08 19 24.56 +21 07 20.8 21.1 VrEA068G96
J89V00B C2012 10 20.43022 08 19 25.96 +21 07 19.5 21.6 VrEA068G96
J89V00B C2012 10 20.44164 08 19 27.37 +21 07 17.0 21.1 VrEA068G96
J89V00B C2012 10 20.45315 08 19 28.81 +21 07 14.9 21.1 VrEA068G96
J89V00B C2013 01 09.18871 08 16 06.18 +24 50 35.5 21.0 VoEA068691
J89V00B C2013 01 09.20386 08 16 04.43 +24 50 41.0 20.7 VoEA068691
J89V00B C2013 01 09.21899 08 16 02.62 +24 50 47.2 20.4 VoEA068691
J89V00B KC2013 01 09.41134 08 15 39.38 +24 51 56.8 20.3 RoEA068291
J89V00B KC2013 01 09.41353 08 15 39.07 +24 51 57.7 20.6 RoEA068291
J89V00B KC2013 01 09.41571 08 15 38.82 +24 51 58.3 20.3 RoEA068291
J89V00B KC2013 01 10.17572 08 14 11.32 +24 56 24.0 20.4 RoEA068291
J89V00B KC2013 01 10.17834 08 14 11.02 +24 56 24.8 20.2 RoEA068291
J89V00B KC2013 01 10.18096 08 14 10.70 +24 56 26.0 20.0 RoEA068291
J89V00B C2013 01 10.39070 08 13 45.36 +24 57 39.8 19.8 RtEA068H01
J89V00B C2013 01 10.39888 08 13 44.37 +24 57 42.5 20.0 RtEA068H01
J89V00B C2013 01 10.41250 08 13 42.73 +24 57 47.1 20.1 RtEA068H01
J89V00B C2013 01 10.42151 08 13 41.64 +24 57 50.1 20.1 RtEA068H01
J89V00B KC2013 01 12.05442 08 10 32.35 +25 06 51.8 20.0 RuEA068104
J89V00B KC2013 01 12.06070 08 10 31.74 +25 06 53.5 20.2 RuEA068104
Observer details:
104 San Marcello Pistoiese. Observers P. Bacci, L. Tesi, G. Fagioli.
Measurer P. Bacci. 0.60-m f/4 reflector + CCD.
291 LPL/Spacewatch II. Observer T. H. Bressi. 1.8-m f/2.7 reflector + CCD.
691 Steward Observatory, Kitt Peak. Observer T. H. Bressi. 0.9-m f/3
reflector + CCD.
H01 Magdalena Ridge Observatory, Socorro. Observer W. H. Ryan. 2.4-m f/8.9
reflector + CCD.
G96 Mt. Lemmon Survey. Observers R. E. Hill, R. A. Kowalski. Measurers
A. Boattini, E. J. Christensen, A. R. Gibbs, A. D. Grauer, R. E. Hill,
J. A. Johnson, R. A. Kowalski, S. M. Larson, R. H. McNaught.
1.5-m reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
121020 G96 5.88+ 0.86- 130112 104 14+ 2- MPC 35681 -13 day
Orbital elements:
1989 VB PHA, Earth MOID = 0.0171 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5 MPC
M 11.92176 (2000.0) P Q
n 0.38749923 Peri. 329.83521 +0.98828872 -0.15079970
a 1.8633259 Node 38.85983 +0.14638536 +0.89371497
e 0.4605089 Incl. 2.13211 +0.04308994 +0.42253167
P 2.54 H 19.7 G 0.15 U 2
Residuals in seconds of arc
891101 413 1.4+ 0.4+ 891122 675 (2.6+ 0.4-) 130109 291 0.1- 0.0
891101 413 (6.5+ 6.3+) 891125 675 0.2+ 0.4- 130109 291 0.1+ 0.1-
891103 675 1.3+ 0.9- 891217 675 0.3+ 0.4- 130110 291 0.0 0.1+
891103 474 1.1- 1.2+ 891217 675 0.2+ 0.4+ 130110 291 0.2+ 0.1-
891103 474 1.4- 0.1+ 121020 G96 0.6+ 0.5- 130110 291 0.1+ 0.2+
891104 474 1.1- 0.6+ 121020 G96 0.4+ 0.4+ 130110 H01 0.1+ 0.1-
891104 474 0.3- 1.3+ 121020 G96 0.2+ 0.1+ 130110 H01 0.1+ 0.1-
891104 413 1.7- 0.1+ 121020 G96 0.3+ 0.3+ 130110 H01 0.2+ 0.0
891105 675 1.4+ 1.6- 130109 691 0.9- 0.2+ 130110 H01 0.1+ 0.0
891105 675 0.5+ 1.3- 130109 691 0.1- 0.1- 130112 104 1.3- 0.2+
891105 675 1.3+ 0.2+ 130109 691 0.1- 0.3+ 130112 104 0.6+ 0.1-
891105 413 (1.8- 3.6-) 130109 291 0.6+ 0.1-
Ephemeris:
1989 VB a,e,i = 1.86, 0.46, 2 q = 1.0052
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2012 12 13 08 58 37.5 +21 36 47 0.6542 1.4924 130.1 30.3 21.0
...
2012 12 28 08 38 45.5 +23 25 44 0.6600 1.5899 150.1 18.0 20.7
...
2013 01 05 08 24 11.3 +24 23 50 0.6789 1.6411 161.4 11.0 20.6
...
2013 01 11 08 12 34.9 +25 01 09 0.7023 1.6791 169.7 6.0 20.5
2013 01 12 08 10 39.0 +25 06 38 0.7070 1.6854 170.9 5.3 20.5
2013 01 13 08 08 43.8 +25 11 53 0.7120 1.6917 172.1 4.6 20.5
...
2013 01 19 07 57 37.0 +25 38 14 0.7470 1.7290 174.5 3.1 20.6
...
2013 01 27 07 44 39.0 +25 59 35 0.8071 1.7779 165.6 7.9 21.0
...
2013 02 11 07 28 36.8 +26 04 46 0.9580 1.8668 147.4 16.6 21.8
Timothy B. Spahr (C) Copyright 2013 MPC M.P.E.C. 2013-A68
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