MPEC 1996-M02 : 1988 PH4
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M.P.E.C. 1996-M02 Issued 1996 June 21, 17:09 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
1988 PH4
Observations:
J88P04H FC1996 05 28.60287 14 51 21.75 -03 58 55.3 413
J88P04H FC1996 05 28.60691 14 51 21.56 -03 58 54.9 413
J88P04H FC1996 05 28.62890 14 51 20.34 -03 58 47.0 413
J88P04H FC1996 05 28.63242 14 51 20.07 -03 58 46.2 413
J88P04H C1996 06 21.53020 14 35 57.61 -03 00 25.4 413
J88P04H C1996 06 21.55618 14 35 57.08 -03 00 25.7 413
J88P04H C1996 06 21.58529 14 35 56.45 -03 00 25.7 413
Observer details:
413 Siding Spring Observatory. Observers R. H. McNaught, G. J. Garradd.
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), reference and Delta-T
960528 413 0.14+ 0.02- 960621 413 0.13+ 0.01- MPC 24117 -0.43 day
Orbital elements:
1988 PH4
Id. G. J. Garradd (1996 observations)
Epoch 1996 Apr. 27.0 TT = JDT 2450200.5 Williams
M 295.36212 (2000.0) P Q
n 0.23536943 Peri. 160.77915 +0.94885659 +0.31569875
a 2.5979813 Node 180.82869 -0.30667641 +0.91993060
e 0.4416749 Incl. 9.30037 -0.07497164 +0.23251234
P 4.19 H 17.0 G 0.15 U 2
Residuals in seconds of arc
880814 675 1.0- 0.7- 880913 675 0.9+ 0.9- 960528 413 0.5+ 0.6+
880814 675 0.7+ 0.3+ 880916 675 0.4+ 0.7+ 960528 413 0.6- 0.3+
880910 675 0.5+ 0.9+ 881028 413 0.3- 0.4- 960621 413 0.0 0.0
880910 675 0.6- 0.3+ 960528 413 0.3- 0.0 960621 413 0.3+ 0.2-
880911 675 0.6- 0.3- 960528 413 0.3+ 0.8- 960621 413 0.0 0.0
Ephemeris:
1988 PH4 a,e,i = 2.60, 0.44, 9 q = 1.4505
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1996 06 16 14 38.22 -03 03.1 1.548 2.351 131.8 18.8 20.8
1996 06 26 14 34.80 -03 03.1 1.595 2.300 121.9 22.0 20.9
1996 07 06 14 34.38 -03 23.0 1.652 2.248 112.6 24.7 21.0
1996 07 16 14 36.92 -04 00.4 1.715 2.196 104.1 26.7 21.1
1996 07 26 14 42.31 -04 52.4 1.781 2.144 96.3 28.1 21.2
1996 08 05 14 50.32 -05 55.8 1.846 2.092 89.1 29.0 21.2
1996 08 15 15 00.77 -07 08.0 1.908 2.039 82.4 29.5 21.2
1996 08 25 15 13.49 -08 26.2 1.966 1.987 76.3 29.6 21.2
1996 09 04 15 28.33 -09 47.8 2.019 1.935 70.7 29.5 21.2
1996 09 14 15 45.18 -11 10.4 2.066 1.884 65.4 29.0 21.2
1996 09 24 16 03.97 -12 31.4 2.106 1.833 60.5 28.4 21.2
Gareth V. Williams (C) Copyright 1996 MPC M.P.E.C. 1996-M02
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