MPEC 2007-J12 : COMET C/2006 WD4 (LEMMON)
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M.P.E.C. 2007-J12 Issued 2007 May 3, 18:02 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
COMET C/2006 WD4 (LEMMON)
Observations:
CK06W04D C2007 04 30.79974 00 50 29.60 -10 23 19.6 15.3 N EJ012E26
CK06W04D C2007 04 30.80592 00 50 30.33 -10 23 22.1 15.4 N EJ012E26
CK06W04D C2007 05 02.79568 00 54 35.10 -10 25 11.2 15.4 N EJ012E26
CK06W04D C2007 05 02.79971 00 54 35.68 -10 25 10.4 EJ012E26
Observer details:
E26 RAS Observatory, Biggera Waters. Observers E. Guido, G. Sostero. 0.15-m
f/6.0 reflector + CCD.
Orbital elements:
C/2006 WD4 (Lemmon)
Epoch 2007 Apr. 10.0 TT = JDT 2454200.5
T 2007 Apr. 28.39514 TT MPC
q 0.5912066 (2000.0) P Q
z +0.0017013 Peri. 292.69278 +0.33342137 -0.88153768
+/-0.0000076 Node 226.79078 -0.60469368 -0.47196641
e 0.9989942 Incl. 152.70380 -0.72330888 -0.01179081
Residuals in seconds of arc
061120 G96 0.3+ 0.3- 061122 734 0.4+ 0.1+ 061221 G96 0.1+ 0.2-
061120 G96 0.2- 0.5+ 061122 291 0.4- 0.0 061221 G96 0.1- 0.2+
061120 G96 0.1- 0.3+ 061122 734 1.6+ 0.3- 061221 G96 0.5+ 0.6+
061120 G96 0.5+ 0.1+ 061122 G96 0.2+ 0.2+ 061221 G96 0.4+ 0.0
061120 J95 0.3+ 0.1+ 061122 G96 0.0 0.2+ 061222 715 0.0 0.4+
061120 J95 0.4- 0.2- 061122 G96 0.3- 0.2+ 061222 715 0.2+ 0.0
061120 J95 0.1+ 0.2+ 061201 G96 0.8- 0.2- 061222 715 0.4+ 0.5+
061121 854 0.7- 0.5+ 061201 G96 0.2+ 1.0- 061222 G96 0.2- 0.2-
061121 854 0.9+ 1.6+ 061201 G96 1.0+ 0.2+ 061222 G96 0.9- 1.0-
061121 G96 0.3+ 0.2+ 061212 G96 0.1+ 0.2- 061222 G96 0.4- 0.0
061121 G96 0.4+ 0.3+ 061212 G96 0.2- 0.2- 061222 G96 0.1- 0.4-
061121 G96 0.2+ 0.1+ 061213 734 0.1+ 0.3+ 061223 204 0.1+ 0.0
061121 G96 0.1+ 0.2+ 061213 734 0.8+ 0.1+ 061225 G96 0.3+ 0.2-
061121 734 0.2- 0.9+ 061213 734 1.0+ 0.0 061225 G96 0.0 0.1+
061121 734 1.0+ 0.1- 061213 734 1.0+ 0.4+ 061225 G96 0.4- 0.2-
061121 734 0.8+ 1.1- 061214 G96 0.0 1.0- 061225 G96 0.8+ 0.4-
061121 711 0.1- 0.4+ 061214 G96 0.0 0.5- 061225 568 0.2- 0.2+
061121 711 0.1+ 0.1- 061214 G96 0.2+ 0.7- 061225 568 0.3- 0.2+
061121 711 0.1- 0.6+ 061214 G96 0.6+ 0.0 061225 204 0.6- 0.5+
061122 734 0.4+ 0.1- 061214 G96 0.3- 0.3- 070430 E26 0.4- 0.7+
061122 734 1.3+ 1.3- 061214 G96 0.1+ 0.2- 070430 E26 0.8+ 0.8-
061122 291 1.3- 0.3- 061214 G96 0.8- 0.4- 070502 E26 0.5- 0.1+
061122 291 0.6- 0.4+ 061214 G96 0.0 0.2- 070502 E26 0.4- 0.7+
Ephemeris:
C/2006 WD4 (Lemmon)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2007 04 30 00 49.15 -10 20.9 0.970 0.592 34.8 76.0 14.2
2007 05 01 00 50.84 -10 23.9 0.931 0.594 35.4 79.3 14.1
2007 05 02 00 52.80 -10 25.4 0.892 0.597 36.0 82.6 14.0
2007 05 03 00 55.06 -10 25.0 0.852 0.600 36.4 86.0 13.9
2007 05 04 00 57.68 -10 22.7 0.813 0.604 36.8 89.5 13.9
2007 05 05 01 00.70 -10 18.0 0.773 0.609 37.1 93.0 13.8
2007 05 06 01 04.19 -10 10.6 0.733 0.615 37.3 96.5 13.7
2007 05 07 01 08.23 -10 00.1 0.693 0.621 37.3 100.1 13.6
2007 05 08 01 12.89 -09 45.9 0.653 0.629 37.2 103.9 13.6
2007 05 09 01 18.29 -09 27.3 0.614 0.636 36.9 107.7 13.5
2007 05 10 01 24.57 -09 03.6 0.575 0.645 36.4 111.7 13.4
2007 05 11 01 31.89 -08 33.7 0.536 0.654 35.7 115.8 13.3
2007 05 12 01 40.44 -07 56.2 0.498 0.663 34.6 120.1 13.2
2007 05 13 01 50.49 -07 09.5 0.461 0.674 33.2 124.7 13.1
2007 05 14 02 02.32 -06 11.5 0.426 0.684 31.4 129.6 13.0
2007 05 15 02 16.33 -04 59.6 0.392 0.695 29.2 134.9 12.9
The "original" and "future" barycentric values of 1/a are +0.002228
and +0.001771 (+/- 0.000008) AU^-1, respectively.
Brian G. Marsden (C) Copyright 2007 MPC M.P.E.C. 2007-J12
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