MPEC 1995-L07 : 1991 YA
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M.P.E.C. 1995-L07 Issued 1995 June 8, 18:09 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
1991 YA
Observations:
J91Y00A C1995 06 04.81300 21 09 25.63 +16 46 32.4 413
J91Y00A C1995 06 05.75394 21 09 17.54 +17 01 10.3 413
J91Y00A C1995 06 05.75899 21 09 17.46 +17 01 14.7 413
J91Y00A C1995 06 08.01424 21 08 53.07 +17 36 15.2 20.2 V 104
J91Y00A C1995 06 08.01840 21 08 53.02 +17 36 18.8 104
J91Y00A C1995 06 08.02292 21 08 52.94 +17 36 23.8 20.0 V 104
J91Y00A C1995 06 08.02813 21 08 52.89 +17 36 27.5 104
J91Y00A C1995 06 08.03299 21 08 52.86 +17 36 31.9 20.1 V 104
Observer details:
104 San Marcello Pistoiese. Observers L. Tesi, A. Boattini. 0.4-m f/5
reflector + CCD.
413 Siding Spring Observatory. Observers R. H. McNaught, G. J. Garradd,
D. J. Asher, D. I. Steel. Measurer D. J. Asher. 1.0-m reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees)
950604 413 0.03+ 0.03+ 950608 104 0.03+ 0.03+ MPC 19870
Orbital elements:
1991 YA
Id. G. J. Garradd (1995 observations)
Epoch 1995 Oct. 10.0 TT = JDT 2450000.5 (M-C) Williams
M 300.40709 (2000.0) P Q
n 0.21729907 Peri. 174.06955 -0.00228340 -0.71763964
a 2.7400856 Node 274.38273 +0.88638194 +0.32095197
e 0.4420530 Incl. 44.30304 +0.46294907 -0.61804788
P 4.54 H 14.5 G 0.15 U 2
Residuals in seconds of arc
911202 675 0.5+ 0.9+ 920111 413 0.9- 0.2- 950605 413 0.6+ 1.0-
911202 675 0.3- 0.9- 920112 413 0.2+ 0.8- 950605 413 0.2+ 1.3-
911231 675 2.3+ 1.3- 920203 801 0.9- 0.0 950608 104 0.0 0.6+
911231 675 1.0+ 0.2+ 920203 801 0.2- 0.4+ 950608 104 0.1+ 0.4+
920103 675 1.0- 0.7+ 920204 675 (0.5- 6.3-) 950608 104 0.2- 1.1+
920103 675 1.0+ 2.0+ 920204 675 0.1- 0.2+ 950608 104 0.1+ 0.0
920107 372 (3.5- 1.0+) 920207 801 1.1- 0.3+ 950608 104 0.6+ 0.2-
920110 402 0.4- 0.4+ 920207 801 0.8- 0.2+
920110 402 1.3- 2.3- 950604 413 0.1+ 1.3-
Ephemeris:
1991 YA a,e,i = 2.74, 0.44, 44 q = 1.5288
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1995 06 02 21 09.72 +16 02.8 2.792 3.183 103.3 18.1 20.2
1995 06 12 21 07.88 +18 38.0 2.645 3.145 110.3 17.6 20.0
1995 06 22 21 03.68 +21 10.3 2.511 3.107 117.0 16.9 19.9
1995 07 02 20 56.99 +23 34.0 2.393 3.068 123.0 16.1 19.7
1995 07 12 20 47.85 +25 42.2 2.294 3.028 128.0 15.3 19.6
1995 07 22 20 36.58 +27 27.6 2.216 2.987 131.5 14.8 19.4
1995 08 01 20 23.83 +28 43.2 2.159 2.946 132.9 14.6 19.3
1995 08 11 20 10.58 +29 24.8 2.126 2.903 132.0 15.0 19.3
1995 08 21 19 57.93 +29 32.2 2.113 2.860 129.0 16.0 19.3
1995 08 31 19 46.96 +29 08.6 2.119 2.815 124.4 17.2 19.3
1995 09 10 19 38.50 +28 20.9 2.142 2.770 118.7 18.6 19.3
1995 09 20 19 33.01 +27 17.3 2.177 2.725 112.6 19.9 19.4
1995 09 30 19 30.69 +26 05.8 2.220 2.678 106.2 21.1 19.4
1995 10 10 19 31.49 +24 53.5 2.270 2.631 99.8 22.0 19.4
1995 10 20 19 35.19 +23 46.0 2.321 2.583 93.6 22.6 19.5
1995 10 30 19 41.59 +22 47.4 2.372 2.534 87.7 23.1 19.5
1995 11 09 19 50.40 +22 00.8 2.420 2.485 82.0 23.3 19.5
1995 11 19 20 01.39 +21 28.0 2.465 2.435 76.7 23.3 19.5
1995 11 29 20 14.36 +21 10.4 2.503 2.385 71.7 23.1 19.5
1995 12 09 20 29.12 +21 08.7 2.535 2.334 67.0 22.9 19.4
1995 12 19 20 45.52 +21 23.0 2.561 2.283 62.7 22.5 19.4
1995 12 29 21 03.49 +21 53.3 2.580 2.232 58.6 22.1 19.4
Gareth V. Williams M.P.E.C. 1995-L07
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