MPEC 2007-K58 : 2007 HX4
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M.P.E.C. 2007-K58 Issued 2007 May 26, 21:07 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 HX4
Revision to MPEC 2007-H37
Additional Observations:
K07H04X C1998 04 22.61469 14 34 24.46 +32 54 32.7 18.4 R EK058566
K07H04X C1998 04 22.62488 14 34 21.31 +32 54 14.9 18.4 R EK058566
K07H04X C1998 04 26.43539 14 15 26.21 +30 54 50.0 18.8 R EK058566
K07H04X C1998 04 26.45595 14 15 20.08 +30 54 08.8 18.3 R EK058566
K07H04X C1998 04 26.47650 14 15 14.00 +30 53 26.9 18.2 R EK058566
K07H04X C2001 05 20.33844 12 42 36.49 +20 26 38.2 19.1 R EK058608
K07H04X C2001 05 20.34931 12 42 35.17 +20 26 09.5 19.1 R EK058608
K07H04X C2001 05 20.36047 12 42 33.87 +20 25 39.2 19.3 R EK058608
Observer details:
566 Haleakala-NEAT/GEODSS. Observers R. Bambery, E. Helin, S. Pravdo,
M. Hicks, K. Lawrence, P. Kervin. Measurer R. Matson. 1.0-m f/2.2
Ritchey-Chretien + CCD.
608 Haleakala-NEAT/MSSS. Observers R. Bambery, E. Helin, S. Pravdo, M. Hicks,
K. Lawrence, P. Kervin. Measurer R. Matson. 1.2-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
980422 56613.91+34.70- 010520 608 7.77+17.04- MPO119740 -0.33 day
Orbital elements:
2007 HX4 Earth MOID = 0.1036 AU
Epoch 2007 Apr. 10.0 TT = JDT 2454200.5 MPC
M 89.37607 (2000.0) P Q
n 0.65186389 Peri. 14.46965 +0.63135528 -0.54147252
a 1.3173407 Node 41.70114 +0.60235549 -0.10846444
e 0.3315278 Incl. 56.56517 +0.48842438 +0.83369237
P 1.51 H 17.8 G 0.15 U 4
Residuals in seconds of arc
980422 566 0.3- 0.5- 070421 J95 0.3- 0.1- 070509 511 1.8+ 0.5-
980422 566 0.6- 0.4- 070421 J95 0.5- 0.0 070509 511 0.0 0.3-
980426 566 0.5+ 0.4- 070421 H55 0.0 0.1+ 070509 511 0.1+ 0.2-
980426 566 0.1- 0.4+ 070421 H55 0.1- 0.2- 070509 511 0.0 0.2-
980426 566 0.1- 0.5+ 070421 H55 0.1- 0.1- 070509 511 0.5+ 0.8+
010520 608 0.2+ 0.1- 070421 734 0.9- 1.0- 070509 511 0.1+ 0.4+
010520 608 0.2- 0.5+ 070421 734 0.4+ 0.3+ 070509 511 0.5+ 1.9+
010520 608 0.0 0.3+ 070421 734 0.2- 0.7+ 070509 511 0.1- 0.5+
070420 703 0.4+ 0.1+ 070421 734 (0.7- 2.2-) 070509 511 0.3+ 0.3-
070420 703 0.6+ 0.1- 070421 J95 0.1+ 0.3- 070509 511 0.8- 0.4+
070420 703 0.8- 1.1+ 070421 J95 0.6- 0.1+ 070510 448 0.1- 0.4-
070420 703 0.5- 0.5+ 070421 J95 0.1- 0.5+ 070510 448 0.4- 0.6-
070420 703 0.4- 0.2- 070425 A17 0.2+ 0.0 070510 448 0.2- 0.1-
070420 703 1.0- 0.4- 070425 A17 0.4+ 0.2- 070512 703 0.7+ 0.7+
070420 703 0.0 0.1+ 070425 A17 0.0 0.2- 070512 703 0.1- 0.8-
070420 198 0.8+ 0.5- 070430 H55 0.8+ 0.3- 070512 703 0.2- 0.2+
070420 198 0.7+ 0.4- 070430 H55 0.1- 0.1+ 070512 703 1.2- 0.5-
070420 A17 0.4+ 0.0 070430 H55 0.6- 0.3+ 070514 H45 0.0 0.6+
070420 198 0.4+ 0.4+ 070501 H55 0.3+ 0.1- 070514 H45 0.6- 0.5+
070420 595 0.2+ 0.4+ 070501 H55 1.0+ 1.1- 070514 H45 0.2- 0.4-
070420 A17 0.7+ 0.1+ 070501 H55 1.0+ 0.3+ 070514 H45 0.3- 0.6-
070420 595 0.5+ 0.4- 070501 A17 0.1+ 0.2- 070514 H45 0.3+ 0.1+
070420 024 0.3+ 0.3- 070501 A17 1.0+ 0.3- 070514 H45 0.4- 0.3-
070420 595 1.1- 0.4- 070501 A17 0.0 0.3- 070522 H55 0.7- 0.9-
070420 024 0.0 0.1- 070506 151 0.9+ 0.2- 070522 H55 0.6- 0.1-
070420 A17 0.9+ 0.2+ 070506 151 0.0 0.1- 070522 H55 0.1+ 0.5-
070420 024 0.3+ 0.2+ 070508 511 0.5- 0.1+ 070522 H55 0.2+ 0.5+
070420 473 0.0 0.3+ 070508 511 0.3+ 0.6+ 070522 H55 0.4- 1.0-
070420 473 0.3+ 0.2+ 070508 511 0.8+ 0.9- 070522 H55 0.6- 0.5+
070420 473 0.1+ 0.0 070509 511 (1.5- 2.4-) 070522 H55 0.0 0.2-
070421 473 0.0 0.1- 070509 511 (2.2- 0.5+)
070421 J95 0.2+ 0.2+ 070509 511 1.2+ 0.9+
Ephemeris:
2007 HX4 a,e,i = 1.32, 0.33, 57 q = 0.8806
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2007 05 20 12 24.22 +32 27.3 0.951 1.598 109.0 36.8 20.2
2007 05 30 12 14.03 +24 07.1 1.057 1.628 103.6 37.2 20.5
2007 06 09 12 10.44 +16 51.6 1.181 1.655 97.5 37.5 20.8
2007 06 19 12 11.22 +10 36.7 1.318 1.678 91.0 37.3 21.0
2007 06 29 12 15.04 +05 11.9 1.460 1.699 84.6 36.6 21.3
2007 07 09 12 21.05 +00 26.2 1.603 1.716 78.3 35.5 21.5
2007 07 19 12 28.77 -03 50.0 1.744 1.730 72.2 34.0 21.6
2007 07 29 12 37.88 -07 44.0 1.879 1.741 66.4 32.3 21.7
2007 08 08 12 48.15 -11 21.8 2.005 1.748 60.7 30.4 21.8
Timothy B. Spahr (C) Copyright 2007 MPC M.P.E.C. 2007-K58
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