MPEC 1995-P04 : 1987 WC
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M.P.E.C. 1995-P04 Issued 1995 Aug. 8, 12:54 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
1987 WC
Observations:
J87W00C C1995 07 20.78028 02 55 44.08 -22 46 14.1 413
J87W00C C1995 07 20.78349 02 55 44.93 -22 46 10.5 413
J87W00C C1995 07 20.78838 02 55 46.03 -22 46 04.3 413
J87W00C C1995 07 20.79137 02 55 46.74 -22 46 01.1 413
J87W00C C1995 08 06.81814 03 59 58.18 -15 47 15.0 413
J87W00C C1995 08 06.82136 03 59 58.86 -15 47 09.5 413
J87W00C VC1995 08 06.82429 03 59 59.53 -15 47 05.0 413
Observer details:
413 Siding Spring Observatory. Observers D. J. Asher, G. J. Garradd,
R. H. McNaught, D. I. Steel. Measurer R. H. McNaught. 1.0-m reflector
+ CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees)
950720 413 0.19- 0.81- 950806 413 0.13- 0.83- MPC 12962
Orbital elements:
1987 WC
Id. R. H. McNaught (1995 observations)
Epoch 1995 Oct. 10.0 TT = JDT 2450000.5 Williams
M 24.89972 (2000.0) P Q
n 0.62006974 Peri. 308.14984 +0.97647622 +0.01663632
a 1.3619956 Node 51.95561 +0.10396826 +0.83713920
e 0.2336798 Incl. 15.84178 -0.18890418 +0.54673685
P 1.59 H 20.5 G 0.15 U 3
Residuals in seconds of arc
871121 675 0.3+ 0.2- 871221 691 0.5- 0.9+ 880113 675 0.1+ 1.0-
871121 675 (5.1+ 4.5-) 871221 691 0.4- 0.8+ 880113 675 0.8+ 0.7-
871123 675 (3.2- 1.9-)Y 871221 691 0.3- 0.5+ 950720 413 0.3- 1.4+
871123 675 (4.4- 2.8+)Y 880109 675 0.1- 0.1+ 950720 413 0.8+ 0.7+
871127 675 (7.9+ 13.6-)Y 880109 675 0.1- 0.2+ 950720 413 0.2- 0.3+
871130 675 (2.4- 1.7+)Y 880109 675 0.6- 0.7- 950720 413 0.3- 0.5-
871130 675 (3.9+ 7.4-)Y 880109 675 0.1- 0.1+ 950806 413 0.5- 0.9-
871215 675 0.0 0.1- Y 880113 675 0.4+ 0.3+ 950806 413 0.1- 0.4-
871215 675 (3.6+ 3.2-)Y 880113 675 0.4+ 0.6- 950806 413 1.0+ 0.5-
Ephemeris:
1987 WC a,e,i = 1.36, 0.23, 16 q = 1.0437
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1995 08 01 03 39.19 -18 16.6 0.485 1.071 83.1 70.2 21.5
1995 08 06 03 57.10 -16 08.6 0.485 1.063 82.2 71.0 21.5
1995 08 11 04 14.27 -13 57.0 0.484 1.056 81.4 71.6 21.6
1995 08 16 04 30.79 -11 42.4 0.483 1.051 80.9 72.1 21.6
1995 08 21 04 46.76 -09 25.6 0.482 1.047 80.5 72.4 21.6
1995 08 26 05 02.25 -07 07.0 0.481 1.044 80.4 72.6 21.5
1995 08 31 05 17.34 -04 46.7 0.480 1.044 80.5 72.6 21.5
1995 09 05 05 32.09 -02 25.1 0.478 1.045 80.8 72.4 21.5
1995 09 10 05 46.58 -00 02.2 0.476 1.047 81.3 72.0 21.5
1995 09 15 06 00.85 +02 21.6 0.473 1.051 82.1 71.4 21.5
1995 09 20 06 14.93 +04 46.4 0.470 1.056 83.1 70.7 21.5
1995 09 25 06 28.80 +07 12.1 0.466 1.063 84.3 69.8 21.4
1995 09 30 06 42.46 +09 39.1 0.462 1.072 85.8 68.8 21.4
1995 10 05 06 55.90 +12 07.5 0.457 1.081 87.5 67.5 21.3
1995 10 10 07 09.09 +14 37.9 0.452 1.092 89.4 66.1 21.3
1995 10 15 07 22.00 +17 10.5 0.446 1.104 91.6 64.6 21.2
1995 10 20 07 34.54 +19 46.2 0.441 1.117 94.0 62.8 21.2
1995 10 25 07 46.61 +22 25.6 0.435 1.131 96.7 60.9 21.1
1995 10 30 07 58.10 +25 09.4 0.429 1.145 99.5 58.8 21.1
1995 11 04 08 08.91 +27 58.4 0.423 1.161 102.7 56.5 21.0
1995 11 09 08 18.89 +30 52.8 0.418 1.177 106.0 54.0 20.9
1995 11 14 08 27.87 +33 53.1 0.414 1.193 109.5 51.4 20.9
1995 11 19 08 35.60 +36 59.1 0.410 1.210 113.2 48.7 20.8
1995 11 24 08 41.80 +40 10.2 0.407 1.227 117.0 45.8 20.7
1995 11 29 08 46.16 +43 24.4 0.406 1.245 120.9 42.8 20.7
1995 12 04 08 48.34 +46 38.9 0.406 1.262 124.8 39.9 20.6
1995 12 09 08 47.97 +49 50.0 0.409 1.280 128.5 37.0 20.6
1995 12 14 08 44.64 +52 52.8 0.413 1.298 131.9 34.4 20.6
1995 12 19 08 38.00 +55 41.5 0.421 1.315 134.9 32.0 20.6
1995 12 24 08 27.86 +58 09.4 0.431 1.333 137.2 30.1 20.6
1995 12 29 08 14.49 +60 10.0 0.445 1.350 138.8 28.6 20.7
1996 01 03 07 58.64 +61 38.7 0.461 1.367 139.6 27.8 20.7
1996 01 08 07 41.52 +62 33.3 0.481 1.385 139.5 27.5 20.8
1996 01 13 07 24.60 +62 54.6 0.503 1.401 138.7 27.6 21.0
1996 01 18 07 09.28 +62 46.0 0.529 1.418 137.2 28.2 21.1
Gareth V. Williams M.P.E.C. 1995-P04
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