MPEC 2001-P21 : 2001 MG1
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M.P.E.C. 2001-P21 Issued 2001 Aug. 8, 15:38 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.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
2001 MG1
Revision to MPEC 2001-M15
Observations:
K01M01G 2 1989 07 01.30417 19 10 44.35 +35 39 08.5 261
K01M01G 2 1989 07 01.34236 19 10 42.59 +35 39 42.3 261
Observer details:
261 Palomar-DSS. Observers C. Brewer, J. D. Mendenhall. Trail located and
measured by ANEOPP (A. Boattini, G. Forti). 1.2-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
890701 261 17.29+ 2.83+ 890701 261 17.30+ 2.84+ MPO 15105 -12.4 day
Orbital elements:
2001 MG1 PHA 0.013D
Epoch 2001 Oct. 18.0 TT = JDT 2452200.5 Williams
M 14.15354 (2000.0) P Q
n 0.24790890 Peri. 218.41778 +0.95436293 -0.07361769
a 2.5096200 Node 142.51281 +0.07801861 +0.99694511
e 0.6400287 Incl. 28.39747 -0.28827850 +0.02609377
P 3.98 H 17.3 G 0.15 U 2
Residuals in seconds of arc
890701 261 0.7+ 0.7- 010625 670 0.4- 0.0 010703 360 0.2- 0.0
890701 261 0.6- 0.1+ 010625 587 0.8+ 0.0 010703 360 0.4- 0.1+
010618 644 0.7- 0.5- 010625 587 1.6+ 0.7+ 010703 360 0.3- 0.2-
010618 644 0.6- 0.5- 010625 587 0.2- 1.3+ 010703 413 0.0 0.4+
010618 644 0.5- 0.4- 010626 046 0.6+ 0.4- 010703 413 0.5+ 0.0
010618 422 0.7- 0.7+ 010626 046 0.1- 0.1- 010703 413 0.6+ 0.4+
010619 620 (3.8+ 0.7-) 010626 046 0.3+ 0.3+ 010703 413 0.3- 1.1-
010619 620 1.5+ 0.9- 010626 046 0.2- 0.6+ 010703 413 0.1- 0.1-
010619 620 0.1+ 0.9- 010626 118 0.5- 0.3- 010704 682 0.6- 1.0+
010619 493 0.3- 0.0 010626 118 0.1- 0.0 010704 682 0.2- 1.0+
010619 493 0.0 0.0 010626 118 0.8- 0.2- 010704 682 0.3+ 0.4+
010619 649 0.7+ 0.4- 010626 711 0.6- 0.1- 010704 682 0.6- 0.6-
010619 649 0.1- 0.1- 010626 711 0.7- 0.2+ 010704 682 0.5+ 0.3+
010619 649 0.3+ 0.1+ 010626 711 0.4+ 0.1+ 010704 413 0.1+ 0.1+
010619 649 0.3+ 0.2- 010627 118 0.2- 0.4+ 010704 413 0.2+ 0.1-
010619 919 0.2+ 0.6- 010627 118 0.7- 0.0 010704 413 0.0 0.2-
010619 919 0.5+ 0.2- 010627 118 0.0 0.4+ 010707 649 0.3- 0.6-
010619 919 0.4+ 0.3- 010627 046 0.1+ 0.3+ 010707 649 0.4- 0.5-
010620 216 0.3- 0.2+ 010627 046 0.0 0.3+ 010707 649 0.6- 0.1-
010620 216 0.2+ 0.2+ 010627 046 0.1- 0.1+ 010716 649 0.6+ 0.5-
010620 216 0.5- 0.3- 010627 046 0.3- 0.8+ 010716 649 0.0 1.6-
010621 046 0.5- 0.9+ 010627 540 0.4+ 1.3- 010716 649 0.2+ 0.1-
010621 046 0.2- 0.5+ 010627 540 0.3- 0.2- 010717 670 0.1+ 0.4-
010621 046 0.2- 0.1+ 010628 688 (2.4- 0.0 ) 010717 670 0.0 0.7+
010621 046 0.3- 0.4+ 010630 688 0.4+ 0.0 010718 670 0.4- 0.7+
010621 046 0.4+ 0.3+ 010630 688 0.3+ 0.0 010718 670 0.3- 0.6+
010623 670 0.1+ 0.8+ 010630 688 0.2+ 0.2+ 010730 413 0.4+ 0.5-
010623 670 0.3+ 0.2+ 010630 688 0.0 0.0 010730 413 0.4- 0.3+
010625 670 0.2- 1.4- 010630 688 2.0+ 0.4+
010625 670 0.6- 0.4+ 010630 688 0.0 0.3-
Ephemeris:
2001 MG1 a,e,i = 2.51, 0.64, 28 q = 0.9034
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2001 07 30 03 41.82 +11 48.9 0.367 0.961 71.1 87.7 18.1
2001 08 09 04 55.02 +02 24.8 0.431 0.922 65.5 89.3 18.4
2001 08 19 05 48.64 -04 03.7 0.523 0.904 63.0 85.9 18.7
2001 08 29 06 29.36 -08 07.3 0.625 0.909 62.4 80.0 18.9
2001 09 08 07 02.01 -10 40.8 0.725 0.936 63.0 73.4 19.0
2001 09 18 07 29.16 -12 23.6 0.815 0.983 64.4 67.2 19.2
2001 09 28 07 51.93 -13 38.6 0.891 1.045 66.7 61.7 19.3
2001 10 08 08 10.90 -14 37.2 0.949 1.119 70.1 57.1 19.5
2001 10 18 08 26.22 -15 25.0 0.989 1.200 74.4 53.1 19.6
2001 10 28 08 37.79 -16 02.3 1.013 1.286 79.7 49.5 19.7
2001 11 07 08 45.44 -16 26.6 1.021 1.375 86.2 46.0 19.8
2001 11 17 08 48.86 -16 33.1 1.018 1.466 93.8 42.3 19.8
2001 11 27 08 47.69 -16 13.7 1.006 1.556 102.7 38.2 19.8
2001 12 07 08 41.83 -15 19.2 0.992 1.646 112.7 33.5 19.8
2001 12 17 08 31.45 -13 40.1 0.982 1.734 123.8 28.1 19.7
2001 12 27 08 17.46 -11 10.6 0.985 1.822 135.6 22.2 19.6
2002 01 06 08 01.49 -07 54.3 1.007 1.907 146.8 16.4 19.6
2002 01 16 07 45.60 -04 06.0 1.056 1.991 154.9 12.1 19.6
2002 01 26 07 31.75 -00 07.9 1.135 2.073 155.8 11.2 19.9
2002 02 05 07 21.25 +03 38.6 1.244 2.153 149.7 13.4 20.2
2002 02 15 07 14.61 +07 00.2 1.379 2.231 140.5 16.4 20.6
2002 02 25 07 11.79 +09 51.1 1.536 2.307 130.7 19.0 21.0
2002 03 07 07 12.34 +12 11.5 1.711 2.381 121.2 20.9 21.4
2002 03 17 07 15.75 +14 04.3 1.899 2.453 112.1 22.1 21.7
2002 03 27 07 21.50 +15 32.9 2.096 2.523 103.5 22.6 22.0
Gareth V. Williams (C) Copyright 2001 MPC M.P.E.C. 2001-P21
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