MPEC 2006-A66 : 2005 YW55 = 2004 HF54
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M.P.E.C. 2006-A66 Issued 2006 Jan. 14, 22:27 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.
Supported in part by the Brinson Foundation
Supported in part by the TABASGO Foundation
Prepared using the Tamkin Foundation Computer Network
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URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
2005 YW55 = 2004 HF54
Revision to MPEC 2005-Y50
Orbital elements:
2005 YW55 = 2004 HF54 Earth MOID = 0.2925 AU
Id. A. Doppler
Epoch 2006 Mar. 6.0 TT = JDT 2453800.5 MPC
M 14.73866 (2000.0) P Q
n 0.47060664 Peri. 256.50463 -0.71047144 -0.69217615
a 1.6369322 Node 239.51825 +0.68912331 -0.64774409
e 0.2463610 Incl. 8.47268 +0.14261622 -0.31830766
P 2.09 H 19.4 G 0.15 U 3
Residuals in seconds of arc
040425 704 0.8- 0.0 051228 474 0.0 0.6- 051229 711 0.4+ 0.3+
040425 704 0.5+ 0.3- 051228 474 0.2- 0.3- 051229 673 0.4+ 0.1+
040425 704 0.8+ 0.6- 051228 474 1.0- 0.5+ 051229 673 0.0 0.0
040425 704 0.2- 0.1- 051228 E12 0.1- 0.2+ 051229 711 0.5+ 0.2+
040427 704 0.3+ 0.9+ 051228 E12 0.0 0.1- 051229 701 0.4+ 0.2+
040427 704 0.1- 0.2+ 051228 E12 0.2+ 0.7+ 051229 711 0.6+ 0.7-
040427 704 0.0 0.2+ 051229 703 0.2- 0.3- 051229 701 0.6+ 0.4-
040427 704 0.6- 0.2+ 051229 703 0.1- 0.4+ 060102 711 0.1+ 0.0
040427 704 0.5- 0.5- 051229 703 0.4- 0.4- 060102 711 0.2+ 0.2-
040427 704 0.6+ 0.3+ 051229 703 0.1- 0.0 060102 711 0.2+ 0.0
051228 703 0.9- 0.1- 051229 651 0.7+ 0.8+ 060107 448 0.2- 0.3-
051228 703 (2.1- 0.3+) 051229 651 0.6+ 0.7+ 060107 448 0.2+ 0.1+
051228 703 0.3- 0.6- 051229 651 1.3+ 0.8+ 060107 448 0.6- 0.3-
051228 703 0.6+ 0.4- 051229 734 0.2- 0.1+ 060109 E12 0.3- 0.1-
051228 703 0.0 0.1- 051229 701 0.4+ 0.2- 060109 E12 0.1- 0.1-
051228 703 0.6- 0.6+ 051229 673 0.0 0.3+ 060109 E12 0.1+ 0.0
051228 703 0.4- 0.3- 051229 734 0.3+ 0.1- 060109 E12 0.3+ 0.3+
051228 703 0.1+ 0.4+ 051229 673 0.2+ 0.0
051228 474 0.2+ 0.3- 051229 734 0.1- 0.2-
Ephemeris:
2005 YW55 a,e,i = 1.63, 0.25, 8 q = 1.2331
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2006 01 15 09 04.00 -15 02.2 0.318 1.241 139.0 31.3 18.8
2006 01 25 09 03.16 -19 01.2 0.303 1.235 141.0 30.1 18.7
2006 02 04 09 00.37 -21 29.9 0.296 1.233 142.1 29.4 18.6
2006 02 14 08 58.01 -22 16.2 0.297 1.236 142.4 29.2 18.6
2006 02 24 08 58.29 -21 26.2 0.305 1.244 141.9 29.4 18.7
2006 03 06 09 02.77 -19 20.3 0.320 1.256 140.7 30.0 18.8
2006 03 16 09 12.09 -16 30.0 0.343 1.272 138.6 31.1 19.0
2006 03 26 09 25.74 -13 25.5 0.375 1.292 135.7 32.6 19.3
2006 04 05 09 42.90 -10 31.6 0.415 1.316 132.2 34.2 19.6
2006 04 15 10 02.62 -08 05.9 0.465 1.342 128.3 35.9 19.9
2006 04 25 10 23.90 -06 16.0 0.525 1.371 124.2 37.4 20.3
2006 05 05 10 46.08 -05 03.5 0.593 1.402 119.9 38.6 20.6
2006 05 15 11 08.65 -04 26.3 0.669 1.434 115.6 39.5 21.0
2006 05 25 11 31.24 -04 19.3 0.754 1.467 111.4 40.0 21.3
2006 06 04 11 53.71 -04 37.5 0.846 1.500 107.2 40.2 21.6
2006 06 14 12 15.97 -05 15.6 0.944 1.534 103.0 40.2 21.9
Gareth V. Williams (C) Copyright 2006 MPC M.P.E.C. 2006-A66
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