MPEC 2001-K02: 1987 QB
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M.P.E.C. 2001-K02 Issued 2001 May 16, 14:48 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://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
1987 QB
Observations:
J87Q00B C2001 05 15.31505 16 08 26.83 -10 41 50.9 19.4 R 918
J87Q00B C2001 05 15.32959 16 08 26.38 -10 41 43.7 19.6 R 918
J87Q00B C2001 05 15.34422 16 08 25.88 -10 41 36.4 918
J87Q00B C2001 05 16.42839 16 07 58.44 -10 31 59.8 19.9 V 926
J87Q00B C2001 05 16.43256 16 07 58.33 -10 31 57.9 19.8 V 926
J87Q00B C2001 05 16.43670 16 07 58.19 -10 31 56.1 19.8 V 926
Observer details:
918 Badlands Observatory, Quinn. Observer R. Dyvig. 0.66-m f/4.8 reflector
+ CCD.
926 Tenagra II Observatory. Observer M. Schwartz. Measurer P. R. Holvorcem.
0.5-m f/10 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
010515 918 2.44- 0.35+ 010516 926 2.48- 0.35+ MPC 14023 +1.4 day
Orbital elements:
1987 QB
Epoch 2001 Apr. 1.0 TT = JDT 2452000.5 Spahr
M 332.36180 (2000.0) P Q
n 0.21076892 Peri. 156.16240 +0.63909843 +0.76865053
a 2.7963938 Node 153.53756 -0.71504469 +0.60673031
e 0.5967606 Incl. 3.47508 -0.28330952 +0.20261957
P 4.68 H 19.4 G 0.15 U 1
Residuals in seconds of arc
870531 413 1.8+ 1.3+ 870829 675 0.9- 0.4+ 871119 688 0.9- 1.6+
870531 413 1.8- 0.4- 870829 675 0.0 0.0 871119 688 0.8- 1.4+
870825 675 (3.7+ 0.0 ) 870925 801 1.1- 0.2- 010515 918 0.6+ 0.2-
870825 675 (4.4+ 1.0-) 870926 801 (3.4- 1.4-) 010515 918 0.3+ 0.7-
870826 413 0.9+ 0.9- 870927 691 0.3+ 0.5- 010515 918 0.8- 1.1-
870826 413 0.2+ 0.6+ 870927 691 0.1+ 0.1- 010516 926 0.2- 0.6+
870827 675 (8.3- 1.7+) 870927 691 0.2- 0.1+ 010516 926 0.1+ 0.3+
870827 675 (5.8- 1.8+) 871026 688 1.5+ 1.0- 010516 926 0.1- 0.2-
870828 675 0.1- 0.3+ 871026 688 1.0+ 1.1-
Ephemeris:
1987 QB a,e,i = 2.80, 0.60, 3 q = 1.1276
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2001 05 11 16 09.91 -11 18.5 0.563 1.559 164.5 10.0 19.8
2001 05 21 16 05.74 -09 50.8 0.480 1.486 169.1 7.4 19.2
2001 05 31 15 59.43 -08 20.4 0.414 1.417 164.4 11.1 18.9
2001 06 10 15 52.63 -07 00.6 0.361 1.351 154.9 18.6 18.8
2001 06 20 15 47.52 -06 06.4 0.319 1.290 144.9 26.9 18.7
2001 06 30 15 46.75 -05 52.9 0.285 1.237 135.8 35.0 18.6
2001 07 10 15 52.89 -06 31.0 0.255 1.192 128.4 42.0 18.5
2001 07 20 16 08.34 -08 07.4 0.229 1.158 123.4 47.1 18.3
2001 07 30 16 36.11 -10 45.9 0.206 1.136 121.4 49.7 18.1
2001 08 09 17 19.32 -14 15.7 0.188 1.128 123.1 48.9 17.9
2001 08 19 18 18.97 -17 51.9 0.181 1.133 128.3 44.5 17.7
2001 08 29 19 29.13 -20 11.6 0.190 1.152 135.1 38.2 17.6
2001 09 08 20 36.21 -20 23.9 0.217 1.183 140.8 32.6 17.8
2001 09 18 21 30.33 -19 00.5 0.262 1.226 143.5 29.2 18.2
2001 09 28 22 10.97 -16 54.6 0.325 1.277 143.4 27.9 18.7
2001 10 08 22 41.62 -14 37.6 0.402 1.336 141.3 27.9 19.3
2001 10 18 23 05.78 -12 21.0 0.493 1.401 137.7 28.6 19.9
2001 10 28 23 26.09 -10 07.4 0.599 1.470 133.3 29.5 20.4
2001 11 07 23 44.10 -07 57.2 0.718 1.543 128.3 30.3 20.9
2001 11 17 00 00.80 -05 50.4 0.850 1.617 123.0 30.9 21.4
2001 11 27 00 16.81 -03 46.4 0.994 1.693 117.4 31.2 21.9
Timothy B. Spahr (C) Copyright 2001 MPC M.P.E.C. 2001-K02
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