MPEC 1999-P16 : 1999 GJ4
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M.P.E.C. 1999-P16 Issued 1999 Aug. 6, 13:30 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 ISSN 1523-6714
1999 GJ4
Revision to MPEC 1999-G26
Observations:
J99G04J 1 1955 03 25.15625 08 34 13.64 +25 28 40.0 675
J99G04J 1 1955 03 25.18264 08 34 13.72 +25 28 52.5 18.5 675
J99G04J 9 1983 02 11.37917 11 33 32.01 +12 18 39.5 17.2 675
J99G04J 9 1983 02 11.40139 11 33 28.46 +12 19 27.1 675
J99G04J 9 1983 02 15.27222 11 22 40.64 +14 37 55.7 17.2 675
J99G04J 9 1986 03 04.17743 09 11 18.13 +21 22 53.4 16.5 675
J99G04J 9 1986 03 04.20486 09 11 14.75 +21 23 35.1 675
J99G04J 1C1999 08 04.37189 12 14 44.41 +22 16 55.2 19.1 R 413
J99G04J 1C1999 08 04.37469 12 14 44.66 +22 16 52.7 413
J99G04J 1C1999 08 04.37817 12 14 45.03 +22 16 48.1 19.3 R 413
Observer details:
413 Siding Spring. Observer R. H. McNaught. 1.0-m f/8 reflector + CCD.
675 Palomar Mountain. Observers C. S. Shoemaker, E. M. Shoemaker, B. Behymer,
D. Rudy, S. Salyards. 1986 trail located by H. E. Holt. Other trails
located and measured by B. A. Skiff, E. Bowell, A. Boattini, A. Milani.
1.2-m Oschin Schmidt, 0.46-m Schmidt.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
550325 675 1.97+ 0.32+ 860304 675 0.86+ 0.12+ MPC 35090 -1.2 day
Orbital elements:
1999 GJ4
Epoch 1999 Aug. 10.0 TT = JDT 2451400.5 Williams
M 302.60572 (2000.0) P Q
n 0.63628734 Peri. 211.79024 +0.95118766 -0.08159242
a 1.3387532 Node 148.37264 +0.04883309 +0.99205989
e 0.8080016 Incl. 34.58126 -0.30472507 -0.09570710
P 1.55 H 15.0 G 0.15 U 4
Residuals in seconds of arc
550325 675 0.4+ 2.2- 990413 587 0.7+ 0.2+ 990429 658 0.7+ 0.6+
550325 675 0.1- 1.0- 990413 587 0.9- 0.7- 990509 046 1.3+ 0.2+
830211 675 0.8- 1.0+ 990413 587 0.8+ 0.8+ 990509 046 0.9+ 0.6+
830211 675 1.8+ 0.1+ 990413 557 0.0 0.2- 990509 046 (2.3+ 0.7-)
830215 675 0.6- 1.4- 990413 557 0.1- 0.3- 990509 046 (2.3+ 0.3+)
860304 675 0.2+ 0.9+ 990413 557 0.0 0.2- 990509 046 1.9+ 0.5-
860304 675 0.3- 1.5+ 990414 046 0.0 0.5+ 990511 360 0.0 0.2-
990410 704 1.6- 1.0+ 990414 046 0.2+ 0.1+ 990511 360 0.6+ 0.4-
990410 704 0.3+ 0.3- 990414 046 0.8- 1.0+ 990511 360 0.0 0.4-
990410 704 (2.5- 0.8-) 990414 046 1.6- 0.8+ 990516 118 0.5+ 0.6+
990410 704 1.4- 0.6+ 990414 118 0.1+ 0.2+ 990516 118 0.4- 1.0+
990412 732 0.1+ 1.4- 990414 118 0.1+ 0.1- 990519 118 1.0+ 1.7+
990412 732 1.0+ 1.2- 990415 118 0.1+ 0.4- 990519 118 0.5+ 0.1-
990412 732 0.3+ 1.5- 990417 046 0.5- 0.6- 990613 104 (3.1+ 2.8+)
990413 557 0.0 0.5- 990417 046 0.6- 1.1+ 990613 104 (2.3+ 3.4+)
990413 557 0.3+ 0.1- 990417 046 0.1+ 0.3+ 990804 413 0.2- 0.6+
990413 557 0.3- 0.2- 990417 046 0.8- 0.6+ 990804 413 0.2+ 0.3+
990413 422 0.6+ 1.1- 990417 046 0.6- 0.7+ 990804 413 1.5+ 1.6-
990413 422 0.4- 0.3- 990429 658 1.0- 0.0
990413 422 0.8- 0.2- 990429 658 0.4- 0.0
Ephemeris:
1999 GJ4 a,e,i = 1.34, 0.81, 35 q = 0.2570
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1999 07 31 12 09.02 +23 12.8 2.150 1.670 49.0 27.3 19.0
1999 08 10 12 22.56 +21 02.9 2.137 1.574 44.0 26.6 18.8
1999 08 20 12 37.68 +18 45.0 2.103 1.470 39.5 26.0 18.6
1999 08 30 12 54.46 +16 16.9 2.047 1.357 35.4 25.5 18.4
1999 09 09 13 13.08 +13 35.1 1.969 1.233 31.8 25.5 18.1
1999 09 19 13 33.87 +10 34.1 1.867 1.097 28.7 26.1 17.7
1999 09 29 13 57.31 +07 04.8 1.739 0.946 26.0 27.7 17.3
1999 10 09 14 24.11 +02 50.5 1.583 0.779 23.7 31.0 16.8
1999 10 19 14 55.06 -02 42.3 1.393 0.592 21.5 38.0 16.1
1999 10 29 15 28.99 -10 55.3 1.155 0.391 19.1 56.3 15.3
1999 11 08 15 38.84 -24 25.5 0.863 0.257 13.8 112.7 16.1
1999 11 18 14 27.68 -32 00.9 0.734 0.383 19.3 121.3 17.2
1999 11 28 13 36.75 -29 06.5 0.752 0.584 36.2 94.4 16.6
1999 12 08 13 15.55 -25 02.8 0.774 0.772 50.3 79.2 16.6
1999 12 18 13 04.77 -21 15.6 0.776 0.940 63.3 69.3 16.7
1999 12 28 12 55.77 -17 25.7 0.756 1.091 76.4 61.2 16.8
2000 01 07 12 44.25 -13 03.8 0.723 1.227 90.7 53.2 16.7
2000 01 17 12 27.45 -07 42.4 0.686 1.352 106.8 44.2 16.5
2000 01 27 12 03.87 -01 06.9 0.659 1.466 125.0 33.4 16.3
2000 02 06 11 33.73 +06 23.8 0.657 1.570 144.9 21.2 16.1
2000 02 16 10 59.98 +13 45.7 0.694 1.666 164.2 9.3 15.9
2000 02 26 10 27.63 +19 45.2 0.772 1.754 169.2 6.1 16.1
2000 03 07 10 00.98 +23 52.2 0.888 1.836 154.9 13.3 16.8
2000 03 17 09 41.97 +26 20.5 1.033 1.910 140.7 19.3 17.5
2000 03 27 09 30.32 +27 38.9 1.198 1.979 128.3 23.3 18.0
2000 04 06 09 24.77 +28 11.6 1.377 2.041 117.5 25.8 18.4
2000 04 16 09 23.99 +28 14.9 1.562 2.099 107.7 27.1 18.8
2000 04 26 09 26.77 +27 58.7 1.751 2.150 98.9 27.5 19.1
2000 05 06 09 32.22 +27 29.1 1.940 2.197 90.7 27.3 19.4
2000 05 16 09 39.66 +26 49.7 2.124 2.239 83.0 26.6 19.6
2000 05 26 09 48.59 +26 02.9 2.303 2.277 75.8 25.6 19.8
2000 06 05 09 58.64 +25 10.3 2.473 2.310 68.9 24.2 19.9
2000 06 15 10 09.56 +24 12.8 2.633 2.338 62.2 22.6 20.0
Gareth V. Williams (C) Copyright 1999 MPC M.P.E.C. 1999-P16
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