MPEC 1999-F17: 1991 VB
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M.P.E.C. 1999-F17 Issued 1999 Mar. 20, 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.
BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
1991 VB
Observations:
J91V00B 3C1999 02 06.49106 09 43 33.61 +02 28 32.5 568
J91V00B 3C1999 02 06.49616 09 43 33.16 +02 28 34.2 568
J91V00B 3C1999 02 07.47078 09 42 20.51 +02 33 35.0 568
J91V00B 3C1999 02 07.47636 09 42 20.14 +02 33 36.0 568
J91V00B 3C1999 02 08.37334 09 41 13.38 +02 38 22.1 568
J91V00B 3C1999 02 08.37789 09 41 13.05 +02 38 24.0 568
Observer details:
568 Mauna Kea. Observers C. Veillet, J. Anderson. Measurers C. Veillet,
J. Anderson, W. Morgan, T. Parker. 3.6-m Canada-France-Hawaii reflector
+ CFH12k CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
990206 568 0.25- 0.09+ 990208 568 0.25- 0.09+ MPC 21797 +0.53 day
Orbital elements:
1991 VB
Epoch 1999 Jan. 22.0 TT = JDT 2451200.5 Williams
M 59.21482 (2000.0) P Q
n 0.29449129 Peri. 134.55373 +0.85226752 -0.51170561
a 2.2374555 Node 256.50891 +0.44269091 +0.81615065
e 0.4115547 Incl. 6.41322 +0.27868410 +0.26843153
P 3.35 H 17.0 G 0.15 U 2
Residuals in seconds of arc
910915 675 1.1+ 0.5+ 911106 675 0.2- 0.6+ 920202 688 0.6+ 0.4+
910916 675 1.0- 0.1+ 911110 675 0.1+ 0.8- 920202 688 0.3+ 0.8+
911101 675 1.0- 0.9- 911110 675 0.3+ 0.4+ 920205 688 0.6- 1.1+
911101 675 (0.4+ 3.0+) 911202 675 0.3+ 0.7- 920205 688 0.7+ 1.4+
911102 675 (2.2- 4.9+) 911203 675 (0.8- 3.5+) 990206 568 0.3- 0.0
911102 675 (0.4+ 3.8+) 911207 675 0.0 0.6+ 990206 568 1.1- 0.1+
911102 675 (0.7- 4.7+) 911207 675 0.1- 1.4- 990207 568 0.1+ 0.6-
911103 675 (0.0 2.7+) 920113 413 0.3- 0.4+ 990207 568 1.0+ 1.4-
911105 675 (0.2- 3.1+) 920113 413 0.2- 0.3- 990208 568 0.3- 0.1-
911105 675 0.8+ 0.4+ 920113 413 0.1- 0.4+ 990208 568 0.0 0.4+
Ephemeris:
1991 VB a,e,i = 2.24, 0.41, 6 q = 1.3166
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1999 03 13 09 09.89 +05 54.8 1.472 2.355 144.9 14.1 20.5
1999 03 18 09 07.73 +06 20.2 1.531 2.377 139.5 15.8 20.7
1999 03 23 09 06.39 +06 42.7 1.594 2.399 134.3 17.3 20.8
1999 03 28 09 05.84 +07 02.0 1.662 2.420 129.3 18.6 21.0
1999 04 02 09 06.03 +07 18.0 1.733 2.442 124.4 19.7 21.1
1999 04 07 09 06.92 +07 30.7 1.808 2.463 119.8 20.7 21.3
1999 04 12 09 08.45 +07 40.1 1.884 2.483 115.3 21.4 21.4
1999 04 17 09 10.57 +07 46.3 1.963 2.504 110.9 22.0 21.5
1999 04 22 09 13.24 +07 49.3 2.044 2.524 106.7 22.4 21.6
1999 04 27 09 16.40 +07 49.2 2.126 2.544 102.6 22.7 21.7
1999 05 02 09 19.99 +07 46.2 2.210 2.563 98.7 22.9 21.9
1999 05 07 09 23.96 +07 40.3 2.293 2.582 94.9 22.9 22.0
1999 05 12 09 28.29 +07 31.8 2.377 2.601 91.1 22.8 22.0
Gareth V. Williams (C) Copyright 1999 MPC M.P.E.C. 1999-F17
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