MPEC 2008-B60 : 2005 BT1
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M.P.E.C. 2008-B60 Issued 2008 Jan. 29, 23:07 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
2005 BT1
Revision to MPEC 2005-B21
Additional Observations:
K05B01T C2002 01 07.54306 09 54 05.40 +08 09 02.2 20.5 V EB060644
K05B01T C2002 01 07.54829 09 54 04.16 +08 08 58.1 20.7 V EB060644
K05B01T C2008 01 29.07274 07 25 22.68 +40 08 17.0 EB060J95
K05B01T C2008 01 29.07493 07 25 21.81 +40 08 08.1 EB060J95
K05B01T C2008 01 29.07711 07 25 20.88 +40 07 58.4 19.3 R EB060J95
K05B01T C2008 01 29.08115 07 25 19.25 +40 07 41.1 EB060J95
K05B01T C2008 01 29.08441 07 25 17.92 +40 07 27.4 19.5 R EB060J95
K05B01T C2008 01 29.74589 07 21 01.35 +39 21 06.7 19.5 R EB060204
K05B01T C2008 01 29.77934 07 20 48.61 +39 18 48.7 EB060204
Observer details:
204 Schiaparelli Observatory. Observer L. Buzzi. 0.60-m f/4.64 reflector
+ CCD.
644 Palomar Mountain/NEAT. Measurers S. Foglia, M. Tombelli. 1.2-m Oschin
Schmidt + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.40-m f/6.0 Schmidt-Cassegrain
+ CCD.
Orbital elements:
2005 BT1 Earth MOID = 0.3654 AU
Epoch 2007 Oct. 27.0 TT = JDT 2454400.5 MPC
M 356.12715 (2000.0) P Q
n 0.64250515 Peri. 32.84077 +0.67426360 -0.00004871
a 1.3301021 Node 304.50859 -0.70346793 +0.30426113
e 0.7135716 Incl. 63.66064 +0.22472532 +0.95258866
P 1.53 H 19.2 G 0.15 U 4
Residuals in seconds of arc
020107 644 0.6- 0.1- 050118 854 1.2- 0.0 050204 649 0.6+ 0.6-
020107 644 0.2+ 0.2- 050118 673 0.5+ 0.3+ 050204 649 0.4- 0.1+
050116 704 0.3+ 0.1- 050118 673 1.8+ 0.1- 050304 F65 0.1+ 0.1+
050116 704 0.4+ 0.3+ 050118 673 0.5+ 0.2- 050304 F65 0.1- 0.3+
050116 704 0.2- 1.0+ 050118 673 0.4+ 0.3+ 080129 J95 0.1+ 0.1-
050116 704 0.2+ 0.1+ 050119 H06 1.4- 0.7- 080129 J95 0.3+ 0.3+
050118 649 0.1- 0.1- 050119 H06 (2.3- 1.5-) 080129 J95 0.2- 0.1-
050118 649 0.4+ 0.3+ 050119 H06 (2.4- 0.2-) 080129 J95 0.0 0.2-
050118 649 0.1- 0.0 050131 448 0.1- 0.2+ 080129 J95 0.1- 0.0
050118 854 (0.7- 3.2+) 050131 448 0.2- 0.1- 080129 204 0.3- 0.1+
050118 854 1.4- 0.4- 050131 448 0.4+ 0.1- 080129 204 0.1+ 0.1+
Ephemeris:
2005 BT1 a,e,i = 1.33, 0.71, 64 q = 0.3810
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2008 01 25 07 58.32 +45 04.0 0.457 1.408 153.5 18.2 19.2
2008 01 30 07 19.43 +39 03.7 0.513 1.457 151.5 18.8 19.5
2008 02 04 06 54.54 +33 44.4 0.584 1.504 145.5 21.8 20.0
2008 02 09 06 38.60 +29 21.6 0.666 1.549 138.6 24.9 20.4
2008 02 14 06 28.45 +25 50.9 0.755 1.593 131.8 27.5 20.8
2008 02 19 06 22.18 +23 02.6 0.849 1.635 125.5 29.5 21.2
2008 02 24 06 18.61 +20 47.6 0.948 1.675 119.7 30.9 21.5
2008 02 29 06 17.00 +18 58.0 1.049 1.714 114.3 31.8 21.8
2008 03 05 06 16.85 +17 27.9 1.152 1.751 109.3 32.3 22.1
Gareth V. Williams (C) Copyright 2008 MPC M.P.E.C. 2008-B60
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