[IAUC] CBET 1772: 20090418 : COMET P/2009 H1 (LINEAR)
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Sab Abr 18 16:29:33 ART 2009
Electronic Telegram No. 1772
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS en CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT en CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
COMET P/2009 H1 (LINEAR)
E. Guido, G. Sostero, P. Camilleri, and E. Prosperi report their recovery
of comet P/2002 LZ11 (cf. IAUC 8240) on unfiltered CCD exposures taken
remotely with a 0.25-m f/3.4 reflector near Mayhill, NM, U.S.A., on Apr. 17;
twenty-five co-added 120-s exposures show an extremely compact coma about 12"
in diameter and a short tail nearly 25" long toward the west. Confirming
astrometric unfiltered CCD observations on Apr. 18 were obtained remotely
with a 0.37-m f/14 reflector near Sonoita, AZ, U.S.A.; twenty 120-s co-added
exposures show a coma about 8" in diameter with a faint extension toward
the west. They have posted an image of the comet at the following website
URL: http://tinyurl.com/c7b2uf.
Packed Desig. Date UT R.A. (2000.0) Decl. Mag. Obs
PK09H010 C2009 04 17.45321 18 07 32.66 -17 42 44.3 18.8 H06
PK09H010 C2009 04 17.46611 18 07 32.88 -17 42 40.6 18.8 H06
PK09H010 C2009 04 17.47624 18 07 33.05 -17 42 37.6 18.7 H06
PK09H010 C2009 04 18.37396 18 07 49.24 -17 38 42.0 19.4 857
PK09H010 C2009 04 18.39202 18 07 49.50 -17 38 37.3 20.3 857
The indicated correction to the predictions on MPC 59599 and in the
2008/2009 Comet Handbook is Delta(T) = -0.4 day. The following orbital
elements by B. G. Marsden are from 157 observations spanning 2002 June 5-2009
Apr. 18 (mean residual 0".7).
Epoch = 2003 Mar. 22.0 TT
T = 2003 Mar. 15.65648 TT Peri. = 107.97244
e = 0.3516264 Node = 231.14275 2000.0
q = 2.3704767 AU Incl. = 11.51911
a = 3.6560353 AU n = 0.14099006 P = 6.99 years
Epoch = 2010 Mar. 25.0 TT
T = 2010 Mar. 5.73233 TT Peri. = 107.76353
e = 0.3532609 Node = 231.05130 2000.0
q = 2.3643294 AU Incl. = 11.52093
a = 3.6557699 AU n = 0.14100542 P = 6.99 years
Residuals in seconds of arc
K0265 704 0.9- 0.3+ K03AT 704 0.5+ 0.5+ K03BS A32 0.2- 0.1-
K0265 704 0.7- 0.8+ K03AT 703 (4.0- 1.0-) K03BS A32 0.0 0.4+
K0265 704 0.5- 0.4+ K03AT 704 0.7+ 0.7+ K03BS A32 0.2- 0.6+
K0265 704 1.2- 0.7+ K03AT 703 (6.0- 1.7-) K03BS A32 0.4+ 0.5+
K0265 704 1.5- 0.2- K03AT 703 (4.4- 1.5-) K03BS A32 0.2- 0.7+
K0269 704 0.1+ 1.1+ K03AT 704 0.1- 0.3+ K03BT 130 0.8+ 0.2-
K0269 704 0.6- 0.5+ K03AT 703 (5.3- 1.8-) K03BT 130 1.0+ 0.2+
K0269 704 0.6- 0.1+ K03AT 704 0.4- 0.2+ K03C1 H41 1.1+ 0.4+
K0269 704 0.1- 0.1+ K03AT 704 0.9- 0.4- K03C1 H41 0.5+ 0.6-
K0269 704 0.4+ 0.1- K03B1 704 0.4- 0.1+ K03C1 H41 1.0- 0.3-
K026D 704 0.2- 0.4+ K03B1 704 0.5+ 0.2+ K03C1 H41 0.6- 0.7-
K026D 704 0.3- 0.4- K03B1 704 0.5+ 1.0- K03C1 704 1.0+ 0.9+
K026D 704 1.1- 0.7+ K03B1 704 0.6- 0.2- K03C1 704 0.2+ 0.6+
K026D 704 0.6- 0.3- K03B1 704 0.6- 0.8- K03C1 704 0.4+ 0.3+
K0279 704 1.9+ 0.0 K03B2 704 0.2+ 0.1+ K03C1 704 1.3+ 0.2+
K0279 704 1.2+ 1.1- K03B2 704 0.1- 0.1+ K03C1 704 0.3+ 0.6-
K0279 704 0.8+ 0.6- K03B2 704 0.1- 0.3- K03C9 A32 1.7+ 0.3-
K0279 704 1.0+ 0.8- K03B2 704 0.5- 0.1+ K03C9 A32 1.6+ 0.6-
K0279 704 0.5+ 0.7- K03B2 704 0.1- 0.5- K03C9 A32 0.9+ 1.0+
K027I 704 0.3+ 0.4+ K03B2 704 0.3+ 0.3+ K03CA 900 (5.5+ 0.5+)
K027I 704 0.1+ 0.2+ K03B2 704 0.1- 0.6- K03CA 900 0.3- 0.5-
K027I 704 0.6+ 0.7+ K03B2 704 0.7- 0.0 K03CB 170 0.5+ 0.2-
K027I 704 0.2+ 0.5+ K03B2 704 0.3- 1.0- K03CB 170 0.5+ 0.3-
K027I 704 0.1+ 0.8+ K03B2 704 0.6- 0.4- K03CB 170 0.6+ 0.2-
K027O 608 0.4- 0.3+ K03BI 644 0.0 0.1- K03CD 349 1.4+ 0.5+
K027S 608 0.1- 0.1+ K03BI 644 0.3- 0.0 K03CD 349 0.2+ 0.8+
K027S 608 0.6+ 0.2+ K03BI 644 0.3+ 0.1+ K03CD 349 0.5+ 0.6+
K027S 608 0.5+ 0.1- K03BJ 703 (2.7- 0.6+) K03CD 349 0.5+ 0.2-
K027U 608 0.1+ 0.3+ K03BJ 703 1.5- 0.4+ K03CE 349 0.8- 0.9+
K027U 608 0.1- 0.5+ K03BJ 703 (3.7- 0.4+) K03CE 349 1.0- 1.0+
K027U 608 0.1- 0.5+ K03BJ 703 1.9- 0.3+ K03CE 349 0.6- 0.9+
K037R 704 0.5+ 0.1- K03BK 204 0.4+ 0.4+ K03CF H41 (0.2- 2.1+)
K037R 704 0.5- 0.2- K03BK 204 0.4+ 0.6+ K03CF H41 0.4+ 0.9+
K037R 704 1.5- 1.2- K03BK 204 0.6+ 0.3+ K03CF H41 0.8+ 0.6+
K0385 704 1.0- 1.1- K03BK 204 0.8+ 0.7+ K03CF H41 0.6+ 0.2+
K0385 704 0.9- 1.2- K03BL 704 1.1+ 1.6+ K03CF H41 0.1+ 1.1+
K0385 704 0.5- 0.2- K03BL 704 0.3+ 0.6+ K03CJ A32 0.4+ 0.9+
K0385 704 1.1- 1.1- K03BL 704 0.5- 0.8+ K03CJ A32 0.8+ 1.0+
K0385 704 0.5- 0.5+ K03BL 704 0.1+ 0.3+ K03CJ H41 (0.0 3.1+)
K038S 704 0.0 0.4+ K03BL 704 0.4- 0.6- K03CJ H41 0.4+ 1.2+
K038S 704 1.2+ 0.6+ K03BL 372 0.9- 0.3+ K03CJ H41 0.4+ 1.1-
K038S 704 0.2+ 1.2- K03BL 372 0.1+ 0.5- K03CJ H41 1.1+ 1.2-
K038S 704 0.3+ 1.8- K03BM 360 0.4+ 0.3+ K03CL 349 0.2- 0.3+
K03AG 699 1.7- 1.2- K03BM 360 0.6+ 0.2- K03CL 349 0.4+ 0.0
K03AG 699 (2.2- 0.9-) K03BN 360 0.3+ 0.5+ K03CM A32 0.6+ 1.0+
K03AG 699 (2.2- 1.4-) K03BN 360 0.5+ 0.5+ K03CN 215 0.5+ 0.9+
K03AG 699 2.0- 1.3- K03BN 900 1.3- 0.1- K03CS 360 0.2+ 1.0+
K03AM 704 0.2+ 0.2- K03BN 900 0.0 0.1- K03CS 360 0.4- 0.5+
K03AM 704 0.6+ 0.3+ K03BN 372 0.3- 0.3- K041C H41 (4.3+ 1.3-)
K03AM 704 0.7- 0.4- K03BO 699 0.5- 1.6+ K041C H41 0.5- 1.0-
K03AM 704 1.1+ 0.5+ K03BO 699 1.6- 0.4- K041D 372 1.8- 0.8+
K03AO 704 0.7+ 0.1+ K03BO 699 1.1- 0.6+ K094H H06 0.3+ 0.4-
K03AO 704 0.1- 0.8- K03BO 699 (2.8- 2.1-) K094H H06 0.2+ 0.1-
K03AO 704 0.2- 1.3- K03BR 213 0.6- 0.3- K094H H06 0.2+ 0.3+
K03AO 704 0.2- 1.1- K03BR 213 (3.2+ 0.7+) K094I 857 0.1- 0.4+
K03AO 704 1.0- 0.7- K03BR 213 0.8- 0.8- K094I 857 0.6- 0.4+
The following ephemeris assumes H_10 = 11.5:
Date TT R. A. (2000) Decl. Delta r Elong. Phase Mag.
2009 03 30 17 58.53 -18 56.1 2.818 3.143 99.6 18.3 18.7
2009 04 09 18 04.21 -18 18.1 2.649 3.109 108.1 17.8 18.5
2009 04 19 18 08.00 -17 35.9 2.488 3.076 116.9 16.9 18.4
2009 04 29 18 09.66 -16 50.3 2.338 3.042 126.1 15.5 18.2
2009 05 09 18 09.09 -16 02.4 2.202 3.009 135.7 13.6 18.0
2009 05 19 18 06.27 -15 13.3 2.085 2.975 145.6 11.1 17.8
2009 05 29 18 01.33 -14 24.7 1.989 2.942 155.7 8.2 17.7
2009 06 08 17 54.71 -13 38.5 1.917 2.910 165.0 5.2 17.6
2009 06 18 17 47.03 -12 56.9 1.872 2.877 169.5 3.7 17.5
2009 06 28 17 39.09 -12 22.1 1.854 2.845 164.1 5.6 17.4
2009 07 08 17 31.82 -11 56.2 1.861 2.814 154.6 8.9 17.3
2009 07 18 17 25.98 -11 40.1 1.892 2.783 144.4 12.3 17.3
2009 07 28 17 22.19 -11 33.9 1.944 2.752 134.4 15.3 17.3
2009 08 07 17 20.81 -11 36.9 2.012 2.722 124.9 17.8 17.4
2009 08 17 17 21.96 -11 47.2 2.093 2.693 115.8 19.8 17.4
2009 08 27 17 25.62 -12 03.1 2.183 2.665 107.4 21.2 17.5
2009 09 06 17 31.67 -12 22.0 2.279 2.637 99.4 22.2 17.5
2009 09 16 17 39.89 -12 42.0 2.377 2.611 91.8 22.6 17.5
2009 09 26 17 50.09 -13 00.7 2.477 2.585 84.7 22.7 17.6
2009 10 06 18 02.05 -13 16.3 2.575 2.560 78.0 22.4 17.6
2009 10 16 18 15.56 -13 27.1 2.671 2.537 71.5 21.9 17.7
2009 10 26 18 30.42 -13 31.3 2.762 2.515 65.3 21.1 17.7
2009 11 05 18 46.44 -13 27.8 2.849 2.494 59.4 20.0 17.7
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2009 CBAT
2009 April 18 (CBET 1772) Daniel W. E. Green
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