MPEC 2007-H24 : 2007 HL4
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M.P.E.C. 2007-H24 Issued 2007 Apr. 20, 15:28 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://www.cfa.harvard.edu/iau/mpc.html ISSN 1523-6714
2007 HL4
Observations:
K07H04L* C2007 04 19.38855 16 20 12.98 -18 44 52.0 18.4 V EH024G96
K07H04L C2007 04 19.39468 16 20 11.86 -18 45 50.8 18.3 V EH024G96
K07H04L C2007 04 19.40074 16 20 10.75 -18 46 48.9 19.0 V EH024G96
K07H04L C2007 04 19.40690 16 20 09.63 -18 47 47.7 18.6 V EH024G96
K07H04L C2007 04 19.44553 16 20 02.47 -18 53 55.8 18.8 V EH024G96
K07H04L C2007 04 19.44595 16 20 02.40 -18 53 59.4 18.7 V EH024G96
K07H04L C2007 04 19.44637 16 20 02.32 -18 54 03.6 18.8 V EH024G96
K07H04L C2007 04 19.44678 16 20 02.25 -18 54 07.5 18.7 V EH024G96
K07H04L C2007 04 19.48064 16 19 56.10 -18 59 26.8 18.8 V EH024G96
K07H04L C2007 04 19.48106 16 19 56.02 -18 59 31.0 18.7 V EH024G96
K07H04L C2007 04 19.48148 16 19 55.95 -18 59 34.5 18.6 V EH024G96
K07H04L C2007 04 19.48191 16 19 55.88 -18 59 38.4 18.7 V EH024G96
K07H04L C2007 04 19.97247 16 19 12.64 -20 17 43.4 18.7 V EH024595
K07H04L C2007 04 19.98595 16 19 10.29 -20 19 53.4 18.9 V EH024595
K07H04L C2007 04 20.11290 16 18 50.80 -20 40 07.9 EH024J95
K07H04L C2007 04 20.12097 16 18 49.35 -20 41 23.4 19.0 R EH024J95
K07H04L C2007 04 20.29201 16 18 35.81 -21 07 53.1 18.8 R EH024H36
K07H04L C2007 04 20.29860 16 18 34.76 -21 08 54.9 19.2 R EH024H36
K07H04L C2007 04 20.30471 16 18 33.66 -21 09 54.1 18.9 R EH024H36
K07H04L C2007 04 20.31621 16 18 34.80 -21 11 23.2 18.9 R EH024854
K07H04L C2007 04 20.32093 16 18 33.91 -21 12 08.4 19.1 R EH024854
K07H04L C2007 04 20.32565 16 18 33.15 -21 12 53.8 19.2 R EH024854
K07H04L C2007 04 20.45471 16 18 08.42 -21 33 14.2 18.8 V EH024G96
K07H04L C2007 04 20.45513 16 18 08.35 -21 33 17.9 18.6 V EH024G96
K07H04L C2007 04 20.45554 16 18 08.24 -21 33 21.9 18.8 V EH024G96
K07H04L C2007 04 20.45596 16 18 08.17 -21 33 25.3 18.8 V EH024G96
Observer details:
595 Farra d'Isonzo. Observers L. Bittesini, G. Lombardi, E. Pettarin,
F. Piani, G. Cralli. Measurers G. Lombardi, E. Pettarin. 0.40-m f/4.5
reflector + CCD.
854 Sabino Canyon Observatory, Tucson. Observer J. E. McGaha. 0.36-m f/10.0
Schmidt-Cassegrain + CCD.
G96 Mt. Lemmon Survey. Observer R. E. Hill. Measurers E. C. Beshore,
E. J. Christensen, G. J. Garradd, A. R. Gibbs, A. D. Grauer, R. E. Hill,
R. A. Kowalski, S. M. Larson, R. H. McNaught. 1.5-m reflector + CCD.
H36 Sandlot Observatory, Scranton. Observer G. Hug. 0.30-m
Schmidt-Cassegrain + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.40-m f/6.0 Schmidt-Cassegrain
+ CCD.
Orbital elements:
2007 HL4 Earth MOID = 0.0326 AU
Epoch 2007 Apr. 10.0 TT = JDT 2454200.5 MPC
M 26.25150 (2000.0) P Q
n 0.83156113 Peri. 138.49180 -0.98183312 -0.18031488
a 1.1199705 Node 31.26721 +0.12973396 -0.86514243
e 0.0914048 Incl. 6.53585 +0.13846599 -0.46799051
P 1.19 H 24.2 G 0.15 U 7
Residuals in seconds of arc
070419 G96 0.3- 0.1- 070419 G96 0.0 0.3- 070420 H36 0.2+ 0.3-
070419 G96 0.2- 0.0 070419 G96 0.0 0.1+ 070420 854 0.2+ 0.2+
070419 G96 0.1- 0.0 070419 G96 0.1+ 0.3+ 070420 854 0.3- 0.4+
070419 G96 0.2+ 0.1+ 070419 595 1.0+ 0.6+ 070420 854 1.0+ 0.4+
070419 G96 0.1- 0.2- 070419 595 0.4- 0.4+ 070420 G96 0.0 0.2-
070419 G96 0.0 0.1+ 070420 J95 0.6+ 0.4- 070420 G96 0.2+ 0.0
070419 G96 0.0 0.1- 070420 J95 0.4- 0.2+ 070420 G96 0.3- 0.2-
070419 G96 0.1+ 0.1- 070420 H36 1.7- 0.8- 070420 G96 0.1- 0.3+
070419 G96 0.0 0.1- 070420 H36 0.1+ 0.5+
Ephemeris:
2007 HL4 a,e,i = 1.12, 0.09, 7 q = 1.0176
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2007 04 20 16 19.07 -20 19.0 0.0428 1.039 143.0 35.6 18.9
2007 04 30 15 54.13 -42 46.0 0.0508 1.050 146.2 32.3 19.2
2007 05 10 15 20.02 -55 34.3 0.0655 1.062 141.8 36.0 19.9
2007 05 20 14 46.84 -61 04.3 0.0839 1.075 137.5 39.5 20.5
2007 05 30 14 27.24 -62 34.4 0.104 1.089 134.4 41.6 21.1
2007 06 09 14 23.75 -62 09.6 0.127 1.104 132.1 43.1 21.6
2007 06 19 14 33.24 -60 46.1 0.150 1.119 130.0 44.1 22.0
Gareth V. Williams (C) Copyright 2007 MPC M.P.E.C. 2007-H24
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