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M.P.E.C. 1997-Y16 Issued 1997 Dec. 27, 19:58 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
1992 BF
Observations:
J92B00F C1997 12 25.52723 06 34 22.24 +56 28 25.6 17.9 V 566
J92B00F C1997 12 25.53777 06 34 16.20 +56 28 04.8 17.9 V 566
J92B00F C1997 12 25.54760 06 34 10.62 +56 27 44.7 17.9 V 566
J92B00F C1997 12 27.58570 06 16 23.78 +55 17 54.7 17.9 V 566
J92B00F C1997 12 27.59580 06 16 18.54 +55 17 30.1 17.8 V 566
J92B00F C1997 12 27.60587 06 16 13.32 +55 17 05.5 17.8 V 566
Observer details:
566 Haleakala-NEAT/GEODSS. Observers E. F. Helin, S. Pravdo, K. J. Lawrence,
D. L. Rabinowitz for the NEAT team. 1.0-m f/2.2 GEODSS telescope + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
971225 566 1.22+ 0.24- 971227 566 1.23+ 0.14- MPC 20031 -0.24 day
Orbital elements:
1992 BF
Epoch 1997 Dec. 18.0 TT = JDT 2450800.5 Williams
M 141.45433 (2000.0) P Q
n 1.13933413 Peri. 336.24654 +0.37467765 +0.92292295
a 0.9078943 Node 315.61803 -0.82909211 +0.29080073
e 0.2715414 Incl. 7.26802 -0.41499752 +0.25228588
P 0.87 H 19.6 G 0.15 U 5
Residuals in seconds of arc
920130 675 0.2- 2.0- 920204 675 0.9+ 0.5- 920209 596 1.5- 0.8+
920130 675 1.1+ 0.0 920205 474 0.8+ 0.8+ 920304 474 1.1+ 0.1-
920131 675 0.9- 0.9- 920205 474 1.0+ 1.3+ 920304 474 0.3- 0.7-
920131 675 0.1+ 0.3+ 920206 801 0.1+ 0.2- 920305 474 0.7+ 1.2+
920202 675 0.0 1.3- 920206 801 1.0+ 1.6- 920305 474 (3.6+ 0.3+)
920202 675 (2.9+ 2.2-) 920208 675 (4.0+ 0.5+) 920307 474 0.7- 0.0
920203 675 0.8+ 0.7- 920208 675 0.4- 0.7- 920307 474 0.9- 0.3-
920203 675 0.2+ 1.3- 920209 596 (3.4+ 0.6-) 971225 566 0.2- 0.7-
920203 675 2.0- 0.3+ 920209 596 0.2- 1.2- 971225 566 0.2- 0.6-
920204 657 0.6- 1.1+ 920209 596 (0.0 4.9-) 971225 566 0.2+ 1.1-
920204 657 0.4+ 1.1+ 920209 596 1.2+ 0.3+ 971227 566 0.0 0.8+
920204 657 1.7- 1.7+ 920209 596 1.3- 1.2+ 971227 566 0.1+ 0.9+
920204 675 1.0+ 0.6+ 920209 596 (3.5+ 1.0+) 971227 566 0.0 1.1+
Ephemeris:
1992 BF a,e,i = 0.91, 0.27, 7 q = 0.6614
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1997 12 18 07 47.03 +58 35.2 0.174 1.120 138.5 35.6 17.5
1997 12 23 06 58.09 +57 34.7 0.173 1.129 144.6 30.3 17.4
1997 12 28 06 13.04 +55 02.0 0.177 1.137 148.1 27.2 17.3
1998 01 02 05 36.91 +51 21.7 0.184 1.144 148.3 26.9 17.4
1998 01 07 05 10.74 +47 10.4 0.194 1.149 145.4 29.1 17.6
1998 01 12 04 53.11 +42 59.3 0.208 1.152 140.6 32.8 17.9
1998 01 17 04 42.01 +39 06.9 0.225 1.154 135.0 37.1 18.2
1998 01 22 04 35.77 +35 41.0 0.244 1.154 129.4 41.2 18.5
1998 01 27 04 33.16 +32 43.3 0.264 1.153 124.0 45.1 18.7
1998 02 01 04 33.31 +30 12.0 0.285 1.151 118.9 48.6 19.0
1998 02 06 04 35.55 +28 03.7 0.307 1.147 114.2 51.7 19.2
1998 02 11 04 39.37 +26 14.8 0.329 1.141 109.8 54.5 19.5
1998 02 16 04 44.41 +24 41.5 0.350 1.134 105.7 57.0 19.7
1998 02 21 04 50.41 +23 20.6 0.370 1.125 101.9 59.3 19.8
1998 02 26 04 57.18 +22 09.6 0.390 1.115 98.3 61.5 20.0
1998 03 03 05 04.58 +21 06.1 0.408 1.104 94.8 63.5 20.1
1998 03 08 05 12.47 +20 08.4 0.425 1.091 91.6 65.5 20.2
1998 03 13 05 20.71 +19 14.7 0.440 1.076 88.5 67.4 20.4
1998 03 18 05 29.19 +18 23.7 0.453 1.060 85.5 69.3 20.4
1998 03 23 05 37.81 +17 34.3 0.464 1.043 82.5 71.3 20.5
1998 03 28 05 46.49 +16 45.8 0.472 1.025 79.7 73.4 20.6
1998 04 02 05 55.15 +15 57.3 0.478 1.005 76.9 75.6 20.6
1998 04 07 06 03.64 +15 08.5 0.481 0.984 74.1 77.9 20.7
1998 04 12 06 11.82 +14 18.9 0.481 0.962 71.2 80.5 20.7
1998 04 17 06 19.53 +13 28.5 0.478 0.939 68.3 83.4 20.8
1998 04 22 06 26.58 +12 37.4 0.471 0.915 65.4 86.7 20.8
1998 04 27 06 32.75 +11 46.3 0.462 0.890 62.2 90.4 20.9
Gareth V. Williams (C) Copyright 1997 MPC M.P.E.C. 1997-Y16
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