MPEC 2008-Y22 : 2008 HZ1
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M.P.E.C. 2008-Y22 Issued 2008 Dec. 21, 02:19 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
2008 HZ1
Revision to MPEC 2008-H38
Additional Observations:
K08H01Z C2008 12 20.04594 11 26 56.88 +75 49 44.1 20.4 C EY022493
K08H01Z C2008 12 20.05201 11 26 55.69 +75 49 54.4 20.4 C EY022493
K08H01Z C2008 12 20.05806 11 26 54.41 +75 50 04.9 20.6 C EY022493
K08H01Z C2008 12 21.05973 11 23 27.10 +76 17 33.4 20.8 C EY022493
K08H01Z C2008 12 21.06369 11 23 26.23 +76 17 39.9 20.5 C EY022493
K08H01Z C2008 12 21.06769 11 23 25.25 +76 17 46.7 20.5 C EY022493
Observer details:
493 Calar Alto. Observer F. Hormuth. 1.23-m reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
081220 493 9.6- 6.0- 081221 493 9.5- 5.9- MPO140215 -0.0014 day
Orbital elements:
2008 HZ1 Earth MOID = 0.2106 AU
Epoch 2008 Nov. 30.0 TT = JDT 2454800.5 MPC
M 28.64318 (2000.0) P Q
n 0.36305503 Peri. 310.95476 +0.89605186 +0.34843543
a 1.9460519 Node 31.73644 -0.02883161 +0.66404537
e 0.6744599 Incl. 31.53399 -0.44301218 +0.66154100
P 2.71 H 19.2 G 0.15 U 4
Residuals in seconds of arc
080426 G96 0.2- 0.2- 080427 291 0.2- 0.2+ 080521 H55 0.5- 1.1-
080426 G96 0.4+ 0.3- 080427 291 0.2+ 0.3+ 080521 H55 (1.9- 1.8-)
080426 G96 0.1+ 0.1- 080427 682 0.8- 0.8- 080601 291 0.5+ 1.0-
080426 G96 0.5+ 0.3- 080427 682 (1.8- 0.1-) 080601 291 0.3- 0.3-
080426 G96 0.1+ 0.2- 080428 291 0.3- 0.0 080601 291 0.2+ 0.7+
080426 G96 0.3- 0.2- 080428 291 0.1- 0.2- 080602 291 0.2+ 0.5-
080426 G96 0.3- 0.2- 080428 291 0.2+ 0.4+ 080602 291 1.0- 0.6+
080426 G96 0.3+ 0.4- 080504 291 0.2+ 0.3+ 080602 291 0.4+ 0.6+
080426 B21 (2.0+ 1.5-) 080504 291 1.1- 0.3+ 081220 493 0.1- 0.1-
080426 B21 1.1+ 1.5- 080504 291 0.1+ 0.0 081220 493 0.0 0.2-
080426 B21 0.9- 0.1+ 080506 691 1.0+ 0.0 081220 493 0.2- 0.0
080426 B21 0.3- 0.6+ 080506 691 (0.2- 1.7-) 081221 493 0.1+ 0.1+
080426 B21 0.2+ 1.0- 080508 691 0.4+ 0.1+ 081221 493 0.2+ 0.0
080427 H55 (1.4+ 3.9-) 080508 691 0.1- 0.1- 081221 493 0.1- 0.1+
080427 H55 0.4+ 0.4+ 080508 691 0.3- 0.1-
080427 H55 0.1+ 0.1- 080521 H55 0.2- 0.4-
Ephemeris:
2008 HZ1 a,e,i = 1.95, 0.67, 32 q = 0.6335
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2008 12 20 11 27.07 +75 48.4 0.870 1.558 114.2 35.1 21.3
2008 12 30 10 31.26 +79 43.9 0.946 1.656 118.2 31.6 21.5
2009 01 09 08 44.98 +81 14.6 1.033 1.749 120.3 29.0 21.8
2009 01 19 07 07.47 +79 42.2 1.134 1.839 120.3 27.5 22.0
2009 01 29 06 20.54 +76 32.0 1.248 1.925 118.6 26.7 22.3
Gareth V. Williams (C) Copyright 2008 MPC M.P.E.C. 2008-Y22
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