MPEC 2007-G31 : 2004 HZ
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M.P.E.C. 2007-G31 Issued 2007 Apr. 12, 03:49 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
2004 HZ
Revision to MPEC 2004-H34
Additional Observations:
K04H00Z C2007 04 11.34609 14 52 35.15 -17 04 42.6 19.5 V EG031691
K04H00Z C2007 04 11.36369 14 52 39.10 -17 04 28.6 19.6 V EG031691
K04H00Z C2007 04 11.38130 14 52 43.04 -17 04 13.8 19.4 V EG031691
K04H00Z C2007 04 11.94419 14 55 10.64 -16 56 11.5 EG031246
K04H00Z C2007 04 11.94579 14 55 10.98 -16 56 10.5 EG031246
K04H00Z C2007 04 11.94951 14 55 11.95 -16 56 07.0 EG031246
K04H00Z C2007 04 11.95022 14 55 12.10 -16 56 06.9 EG031246
K04H00Z C2007 04 11.95117 14 55 12.37 -16 56 05.4 EG031246
K04H00Z C2007 04 11.99717 14 55 23.94 -16 55 22.5 18.7 V EG031595
K04H00Z C2007 04 12.00496 14 55 25.83 -16 55 15.7 19.0 V EG031595
K04H00Z C2007 04 12.01095 14 55 28.11 -16 55 11.6 EG031J95
K04H00Z C2007 04 12.03352 14 55 33.72 -16 54 52.3 19.4 R EG031J95
Observer details:
246 Klet Observatory-KLENOT. Observer M. Tichy. 1.06-m KLENOT Telescope
+ CCD.
595 Farra d'Isonzo. Observers L. Bittesini, G. Lombardi, E. Pettarin,
F. Piani. Measurers L. Bittesini, E. Pettarin. 0.40-m f/4.5 reflector
+ CCD.
691 Steward Observatory, Kitt Peak. Observer J. V. Scotti. 0.9-m f/3
reflector + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.40-m f/6.0 Schmidt-Cassegrain
+ CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
070411 69126.30- 3.98+ 070412 J9527.52- 3.98+ MPO 66364 +3.3 day
Orbital elements:
2004 HZ Earth MOID = 0.0000 AU
Epoch 2007 Apr. 10.0 TT = JDT 2454200.5 MPC
M 312.20104 (2000.0) P Q
n 0.66132162 Peri. 96.92150 +0.51901370 +0.85422117
a 1.3047508 Node 204.41967 -0.81048977 +0.48047596
e 0.4424970 Incl. 4.23250 -0.27153473 +0.19861783
P 1.49 H 22.6 G 0.15 U 4
Residuals in seconds of arc
040419 704 0.5+ 0.2- 040420 704 (3.3+ 0.0 ) 040425 587 0.5- 0.9+
040419 704 0.7+ 0.8- 040420 448 0.8- 0.3- 040425 587 1.2- 0.3-
040419 704 0.6+ 0.9- 040420 448 0.3- 0.1- 040429 950 0.4+ 0.2+
040419 704 0.5+ 0.7- 040420 854 (1.5- 2.9-) 040429 950 0.2- 1.3-
040419 704 0.8+ 1.1- 040420 854 1.3+ 0.8+ 040501 715 1.4- 1.1+
040419 620 0.3- 0.1- 040420 854 0.7+ 0.3+ 040501 715 0.9- 0.4-
040419 620 1.5- 1.1+ 040420 448 0.1- 0.8- 040501 715 0.3- 0.6-
040420 704 0.8+ 0.3- 040421 246 0.8+ 0.4+ 040501 291 1.0+ 0.2-
040420 704 (2.3+ 2.3-) 040421 246 0.8+ 0.9+ 040501 291 1.6+ 1.0-
040420 704 0.7+ 0.1- 040421 246 0.6+ 0.1+ 040507 568 0.2- 0.1+
040420 704 1.6+ 0.6+ 040422 704 0.5+ 1.0+ 040507 568 0.2- 0.1+
040420 704 0.2+ 0.2+ 040422 704 0.1+ 0.7+ 070411 691 0.4- 0.2-
040420 704 0.9+ 0.4- 040422 704 0.5- 0.5+ 070411 691 0.1- 0.5-
040420 704 0.8+ 0.3- 040422 704 0.6- 1.3+ 070411 691 0.1- 0.2-
040420 704 (2.1+ 0.2-) 040422 704 0.0 1.1+ 070411 246 0.2+ 0.0
040420 704 0.9+ 0.0 040423 J95 0.6- 1.1+ 070411 246 0.6- 0.4-
040420 704 1.0+ 1.0+ 040423 J95 1.7- 0.5- 070411 246 0.0 0.2-
040420 704 (2.4+ 0.3-) 040424 176 1.2- 0.2+ 070411 246 0.4- 0.7-
040420 704 1.2+ 0.1- 040424 176 0.9- 0.3+ 070411 246 0.1+ 0.0
040420 704 (3.0+ 0.2+) 040424 176 0.7- 0.3+ 070411 595 0.7+ 0.0
040420 704 0.6+ 0.4+ 040424 176 0.5- 0.4+ 070412 595 0.2+ 0.3-
040420 704 (3.5+ 0.7+) 040424 176 0.4- 0.4+ 070412 J95 0.5+ 0.4+
040420 704 0.4+ 0.1+ 040425 715 0.6- 0.2- 070412 J95 0.3- 0.7-
040420 704 1.4+ 0.2+ 040425 715 0.4+ 0.1-
040420 704 1.2+ 1.7+ 040425 715 0.4- 0.5-
Ephemeris:
2004 HZ a,e,i = 1.30, 0.44, 4 q = 0.7274
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2007 04 10 14 47.38 -17 20.3 0.135 1.125 155.0 22.1 19.6
2007 04 12 14 55.40 -16 54.2 0.118 1.111 155.2 22.2 19.3
2007 04 14 15 05.66 -16 16.5 0.102 1.096 155.0 22.8 18.9
2007 04 16 15 19.36 -15 20.5 0.0858 1.081 153.9 24.1 18.6
2007 04 18 15 38.60 -13 53.2 0.0703 1.066 151.4 26.8 18.2
2007 04 20 16 07.34 -11 28.0 0.0558 1.051 146.2 32.1 17.8
2007 04 22 16 53.19 -07 08.3 0.0429 1.036 136.3 42.0 17.5
2007 04 24 18 08.78 +00 43.0 0.0333 1.022 118.0 60.4 17.4
2007 04 26 19 58.73 +11 40.3 0.0304 1.007 90.5 87.8 18.1
2007 04 28 21 47.58 +19 25.9 0.0357 0.992 65.0 113.1 19.7
2007 04 30 23 01.62 +22 13.9 0.0465 0.977 49.1 128.8 21.5
Kyle E. Smalley (C) Copyright 2007 MPC M.P.E.C. 2007-G31
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