MPEC 1999-J19 : 1999 HP11
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M.P.E.C. 1999-J19 Issued 1999 May 7, 15:56 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 HP11
Observations:
J99H11P* C1999 04 19.20273 11 53 01.36 -00 17 56.1 20.7 V 691
J99H11P C1999 04 19.22464 11 52 58.19 -00 17 56.9 20.8 V 691
J99H11P C1999 04 19.24604 11 52 55.02 -00 17 57.3 21.2 V 691
J99H11P C1999 04 20.25955 11 50 32.20 -00 18 34.4 21.0 V 691
J99H11P C1999 04 20.26333 11 50 31.66 -00 18 35.1 21.4 V 691
J99H11P C1999 04 20.26701 11 50 31.13 -00 18 35.0 20.8 V 691
J99H11P C1999 04 21.25449 11 48 13.94 -00 19 23.1 20.9 V 691
J99H11P C1999 04 21.25821 11 48 13.29 -00 19 23.1 20.9 V 691
J99H11P C1999 04 21.26327 11 48 12.58 -00 19 23.1 21.4 V 691
J99H11P C1999 04 22.19692 11 46 04.70 -00 20 20.5 20.8 V 691
J99H11P C1999 04 22.20064 11 46 04.17 -00 20 20.9 22.1 V 691
J99H11P C1999 04 22.20457 11 46 03.69 -00 20 20.7 21.6 V 691
J99H11P C1999 05 06.15924 11 18 41.13 -00 57 23.8 21.5 V 691
J99H11P C1999 05 06.16658 11 18 40.36 -00 57 25.7 20.7 V 691
J99H11P C1999 05 07.12259 11 17 10.12 -01 01 35.0 711
J99H11P C1999 05 07.13555 11 17 08.78 -01 01 39.2 711
J99H11P C1999 05 07.14853 11 17 07.49 -01 01 42.6 711
Observer details:
691 Steward Observatory, Kitt Peak. Observers J. Larsen, R. Kowalski,
C. Bayus, J. V. Scotti. 0.9-m Spacewatch telescope.
711 McDonald Observatory. Observer J. G. Ries. 0.76-m reflector + CCD.
Orbital elements:
1999 HP11
Epoch 1999 Apr. 12.0 TT = JDT 2451280.5 Williams
M 288.68908 (2000.0) P Q
n 0.48773006 Peri. 311.67858 +0.81786587 +0.56998453
a 1.5983910 Node 14.17441 -0.38400603 +0.64268525
e 0.5479229 Incl. 18.77734 -0.42852629 +0.51193097
P 2.02 H 19.5 G 0.15
From 17 observations 1999 Apr. 19-May 7.
Ephemeris:
1999 HP11 a,e,i = 1.60, 0.55, 19 q = 0.7226
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1999 05 02 11 25.84 -00 41.6 0.794 1.643 131.1 27.5 21.3
1999 05 22 11 00.42 -02 33.1 0.843 1.491 106.6 40.6 21.6
1999 06 11 10 55.80 -05 51.1 0.891 1.326 87.9 49.9 21.7
1999 07 01 11 06.07 -10 28.9 0.898 1.151 73.6 57.9 21.7
1999 07 21 11 25.53 -16 20.5 0.837 0.975 62.6 67.7 21.4
1999 08 10 11 48.02 -22 54.6 0.696 0.819 53.4 83.6 21.2
1999 08 20 11 56.76 -25 47.3 0.596 0.762 48.5 95.6 21.2
1999 08 30 11 59.78 -27 20.4 0.485 0.729 42.3 111.1 21.5
1999 09 09 11 52.83 -25 43.4 0.372 0.725 33.1 130.6 22.4
1999 09 19 11 33.25 -17 38.6 0.275 0.751 19.6 153.4 25.2
1999 09 29 11 04.05 +00 33.1 0.214 0.803 19.2 155.8 25.4
1999 10 09 10 33.15 +25 18.2 0.203 0.873 46.8 123.5 20.9
1999 10 19 10 03.82 +46 05.2 0.231 0.954 72.8 93.8 19.6
1999 10 29 09 29.92 +60 13.4 0.276 1.041 92.1 72.6 19.3
1999 11 08 08 35.33 +69 36.2 0.328 1.129 106.7 57.2 19.4
1999 11 18 06 59.6 +74 33.9 0.386 1.218 118.0 45.8 19.6
1999 11 28 05 08.4 +74 23.9 0.451 1.305 126.3 37.5 19.9
1999 12 08 03 59.2 +70 46.3 0.527 1.390 131.1 32.3 20.2
1999 12 18 03 30.05 +66 08.5 0.616 1.472 132.5 29.6 20.6
1999 12 28 03 22.41 +61 42.1 0.718 1.550 130.7 28.7 21.0
2000 01 07 03 25.79 +57 48.9 0.832 1.625 126.8 29.0 21.4
2000 01 17 03 35.38 +54 32.8 0.959 1.697 121.7 29.6 21.8
Gareth V. Williams (C) Copyright 1999 MPC M.P.E.C. 1999-J19
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