[IAUC] CBET 1767: 20090415 : COMET P/2009 F7 (LINEAR)
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Mie Abr 15 16:49:34 ART 2009
Electronic Telegram No. 1767
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 F7 (LINEAR)
On Mar. 31, the LINEAR team reported a single-night candidate for the
recovery of comet P/2003 H4 (cf. IAUCs 8127, 8135). Today, G. Sostero, E.
Prosperi, E. Guido, and P. Camilleri reported their recovery of this comet
on 60-s unfiltered CCD exposures taken remotely with a 0.35-m f/7 "Skylive"
reflector at the Grove Creek Observatory, Trunkey, New South Wales; thirty
co-added images show the object to have a central condensation and a diffuse
coma nearly 15" in diameter. The available astrometry is given below. The
correction to the orbital elements on MPC 56804 (and to those in the
2008/2009 Comet Handbook, p. 97) is Delta(T) = -0.13 day.
Packed Desig. Date UT R.A. (2000.0) Decl. Mag. Obs
PK09F070 C2009 03 31.30214 12 53 01.79 -27 12 26.6 19.4 704
PK09F070 C2009 03 31.31444 12 53 01.53 -27 12 19.1 19.6 704
PK09F070 C2009 03 31.32707 12 53 01.19 -27 12 07.6 19.8 704
PK09F070 C2009 03 31.33954 12 53 00.84 -27 11 59.9 19.7 704
PK09F070 C2009 04 15.56030 12 48 07.64 -23 06 02.0 19.5 E16
PK09F070 C2009 04 15.57870 12 48 07.29 -23 05 40.6 19.5 E16
PK09F070 C2009 04 15.59400 12 48 07.00 -23 05 22.6 19.5 E16
PK09F070 C2009 04 15.61201 12 48 06.66 -23 05 00.8 19.7 E16
PK09F070 C2009 04 15.62125 12 48 06.34 -23 04 50.5 19.7 E16
PK09F070 C2009 04 15.63049 12 48 06.10 -23 04 39.8 19.6 E16
The following orbital elements by B. G. Marsden are from 231 observations,
2003 Apr. 29-2009 Apr. 15 (mean residual 0".6):
Epoch = 2003 May 1.0 TT
T = 2003 May 14.30523 TT Peri. = 10.44779
e = 0.4899747 Node = 226.79339 2000.0
q = 1.7030954 AU Incl. = 18.14776
a = 3.3392369 AU n = 0.16152257 P = 6.10 years
Epoch = 2009 June 18.0 TT
T = 2009 June 22.28618 TT Peri. = 10.60506
e = 0.4902703 Node = 226.74365 2000.0
q = 1.7014372 AU Incl. = 18.15146
a = 3.3379202 AU n = 0.16161815 P = 6.10 years
Residuals in seconds of arc:
K034T 704 0.7- 1.6+ K0355 704 0.7- 0.4+ K0363 H41 0.2- 0.3-
K034T 704 0.2+ 0.7- K0355 704 1.0- 0.4+ K0363 H41 0.7+ 0.0
K034T 704 0.1- 0.2- K0355 360 0.0 0.0 K0363 704 0.2- 0.2-
K034T 704 0.4- 0.2- K0355 360 0.3+ 0.6- K0363 704 0.9- 0.6-
K034T 704 1.2- 0.7+ K0355 360 0.2+ 0.1- K0363 704 0.9- 0.6-
K034U 651 0.1- 0.1+ K0356 118 0.2+ 0.1- K0363 704 0.6- 0.5-
K034U 651 0.2- 0.2+ K0356 118 0.4- 0.9- K0363 704 0.5- 0.8-
K034U 704 0.2- 0.8+ K0358 372 0.0 0.1+ K0363 213 0.5- 0.2-
K034U 704 0.3+ 0.4+ K0359 372 0.1- 0.7- K0363 213 1.0- 0.4-
K034U 704 1.1+ 0.1+ K0359 360 0.2+ 0.4+ K0363 213 0.8- 0.1+
K034U 704 0.3+ 0.5+ K0359 360 0.5+ 0.5+ K0364 H41 0.4+ 0.5-
K034U 704 0.1- 0.5- K0359 360 0.3+ 0.2+ K0365 360 0.1- 0.0
K034U 704 0.0 0.0 K035A 170 0.8- 0.1+ K0365 360 0.4+ 0.2+
K034U 704 0.0 0.2- K035A 170 0.2- 0.2+ K0367 H41 (2.9+ 1.2-)
K034U 704 0.4+ 0.5+ K035A 213 (3.9+ 3.7-) K0368 H41 0.6+ 0.0
K034U 704 0.7+ 0.1+ K035A 213 (1.4+ 4.9-) K0368 H41 0.5+ 1.0+
K034U 704 0.1+ 0.1- K035C 608 0.0 0.2+ K0368 E14 0.2+ 0.5+
K034U 704 0.4- 0.2+ K035C 608 0.4+ 0.3+ K0368 E14 0.7+ 0.4+
K034U 704 0.6- 0.3+ K035C 608 0.3+ 0.1+ K0368 E14 0.4+ 0.4+
K034U 704 0.4- 0.3+ K035K 360 0.5+ 0.5- K0369 H41 0.1- 0.0
K034U 704 1.0+ 0.1+ K035K 360 0.6+ 0.1+ K036G 118 0.5+ 0.0
K034U 926 1.6- 0.3+ K035K 360 0.2+ 0.2- K036G 118 0.1- 0.2+
K034U 926 (0.3+ 2.9+) K035L 620 0.1- 0.2+ K036G 118 0.0 0.6+
K034U 926 1.3+ 0.8- K035L 620 0.0 0.2+ K036G 118 0.4+ 0.2+
K034U 422 0.2+ 0.5+ K035L 204 0.2- 0.2- K036K 215 0.2+ 0.1+
K034U 422 0.7+ 0.3+ K035L 204 0.1- 0.1+ K036K 215 0.7+ 1.1+
K034U 422 0.9+ 0.7+ K035L 204 0.5- 0.2- K036K 215 0.5+ 0.5-
K034U 422 0.0 0.4+ K035M H41 0.0 0.9+ K036L 213 0.6+ 0.1+
K034U 422 0.1- 0.7- K035M H41 1.3+ 0.6+ K036L 213 0.2+ 0.5-
K034U 422 0.5+ 0.5- K035N 691 0.7- 0.3- K036L 213 0.9- 1.2-
K0351 176 0.3- 0.3+ K035N 691 0.8- 0.1- K036L A02 0.2- 1.0-
K0351 176 0.0 0.2+ K035N H41 0.5+ 0.1+ K036L A02 0.5+ 1.6-
K0351 176 0.1+ 0.1+ K035N H41 0.9- 0.0 K036L A02 0.8+ 0.6-
K0351 176 0.3+ 0.1+ K035N 691 1.6- 0.9- K036M H41 (7.1- 2.9+)
K0351 704 0.4- 0.1+ K035N 118 0.9+ 0.0 K036M H41 (7.4- 1.2-)
K0351 704 0.6+ 0.1- K035N 118 0.7+ 0.3+ K036N H41 0.4- 0.7+
K0351 704 0.3+ 0.5+ K035N 118 0.1- 0.2- K036O H41 0.7+ 0.3+
K0351 704 0.4+ 0.0 K035N 118 0.7+ 0.2- K036O H41 0.1- 0.9-
K0351 E14 0.6+ 0.8+ K035O H41 0.0 0.6+ K036P H41 0.3+ 1.0-
K0351 E14 0.5+ 0.5+ K035O H41 0.6+ 0.1+ K036P H41 0.1+ 0.1-
K0351 E14 1.1+ 1.0+ K035P 118 0.5+ 0.0 K036Q 360 0.0 0.1-
K0352 854 0.6+ 1.0+ K035P 118 0.1+ 0.0 K036Q 360 0.1+ 0.1-
K0352 854 0.8+ 1.5- K035P 118 0.0 0.7+ K036R H41 (0.6+ 2.8-)
K0352 854 (0.4+ 4.5-) K035P 118 0.3- 0.7+ K036R H41 0.0 0.7+
K0352 734 0.5- 0.9- K035P 118 0.3+ 0.2- K036R 118 0.8- 0.8-
K0352 734 1.1- 0.6- K035P J95 0.1+ 0.4- K036R 118 0.1+ 0.4-
K0352 734 0.2- 0.3- K035P J95 0.2+ 0.3- K036R 118 1.1+ 0.5-
K0352 711 1.3+ 0.9+ K035P J95 0.0 0.1+ K036R 118 0.6- 0.2+
K0352 711 1.4+ 0.8+ K035Q H41 (0.7+ 3.0-) K036T 704 0.2+ 0.0
K0352 711 1.5+ 0.5+ K035Q H41 1.6- 0.8- K036T 704 1.2+ 0.2+
K0352 704 0.7+ 0.8- K035Q H41 0.7+ 0.4+ K036T 704 0.7- 0.0
K0352 704 0.8+ 2.0- K035Q 608 0.8+ 0.8+ K036T 704 0.3+ 0.7+
K0352 704 0.7- 0.5+ K035Q 608 0.5+ 0.8+ K036T 704 0.3+ 0.4+
K0352 926 0.1- 1.4- K035Q 608 1.0+ 0.8+ K036T 608 0.3+ 0.3+
K0352 926 1.2- 0.4+ K035R H41 0.1+ 0.0 K036T 608 0.0 0.0
K0352 704 0.7- 0.3+ K035R H41 1.3+ 0.4- K036T 608 0.2- 0.6+
K0352 926 0.2- 0.1- K035S H41 0.0 0.2+ K0377 360 0.1+ 0.6+
K0352 704 0.4- 1.8- K035S H41 0.3- 0.6- K0377 360 0.1+ 0.4+
K0352 926 (0.6- 2.3+) K035S H41 0.2+ 0.1- K037I 442 (5.3+ 13.9+)
K0352 704 0.5- 0.3+ K035T H41 0.2- 0.5+ K037I 442 (7.8+ 23.3+)
K0352 704 0.0 1.7- K035T H41 0.9+ 0.8+ K037N 644 0.0 0.2+
K0352 704 0.6- 0.3+ K035U H41 1.2+ 0.5+ K037N 644 0.2- 0.2+
K0352 704 (0.1+ 2.1-) K035U H41 0.8+ 0.5+ K037N 644 0.1+ 0.5+
K0352 428 0.4- 0.2- K035V A02 0.7- 0.0 K037U 644 0.5- 0.7+
K0352 428 (2.3- 1.2+) K035V A02 0.2- 0.4- K037U 644 0.1- 0.6+
K0352 E14 0.2+ 0.2+ K035V H41 0.3- 1.2+ K037U 644 0.1- 0.3+
K0352 E14 0.5- 0.3+ K035V H41 0.0 0.5+ K037V 360 0.2+ 0.3-
K0352 E14 0.1- 0.9+ K035V 159 0.8+ 0.5+ K037V 360 0.3- 0.3-
K0353 213 0.6- 0.2- K035V 159 0.0 0.2- K037V 360 0.6- 0.9-
K0354 235 (4.3- 5.2-) K035V 159 1.7+ 0.3+ K0382 118 1.9- 0.7-
K0354 246 0.1- 0.1+ K0361 691 0.1+ 0.0 K0382 118 1.0+ 0.2-
K0354 246 0.1- 0.0 K0361 691 0.2- 0.4- K093V 704 1.1+ 0.5+
K0354 246 0.2+ 0.1+ K0361 691 0.2- 0.2- K093V 704 1.4+ 1.1-
K0354 246 0.1+ 0.2+ K0361 360 0.1+ 0.2- K093V 704 0.7+ 1.1+
K0354 246 0.0 0.1+ K0361 360 0.4+ 0.3- K093V 704 0.2- 0.4-
K0354 246 0.1+ 0.1+ K0361 246 0.5+ 0.8- K094F E16 0.8- 0.3-
K0354 170 0.8- 0.6+ K0361 246 0.4+ 0.5- K094F E16 0.5- 0.5-
K0354 170 0.9- 0.3+ K0361 246 0.2+ 0.5- K094F E16 0.2- 0.6-
K0354 170 1.0- 0.2+ K0361 246 0.2+ 0.3- K094F E16 0.1+ 0.1-
K0354 170 1.1- 0.1+ K0363 118 0.4+ 1.3+ K094F E16 1.8- 0.8-
K0355 704 0.8- 0.4+ K0363 118 0.3+ 0.9+ K094F E16 (2.6- 1.1-)
K0355 704 1.4- 0.2+ K0363 118 0.2+ 1.0+
K0355 704 1.1- 0.1+ K0363 118 0.4+ 0.4+
The ephemeris below uses H_10 = 16.0 for the magnitudes.
Date TT R. A. (2000) Decl. Delta r Elong. Phase Mag.
2009 03 30 12 53.44 -27 27.8 0.909 1.866 155.8 12.7 18.5
2009 04 09 12 50.13 -25 05.7 0.853 1.831 161.7 9.9 18.3
2009 04 19 12 47.28 -21 56.6 0.818 1.800 161.9 10.0 18.1
2009 04 29 12 46.23 -18 17.6 0.805 1.773 156.0 13.4 18.0
2009 05 09 12 48.04 -14 33.2 0.813 1.749 147.3 18.2 18.0
2009 05 19 12 53.17 -11 06.3 0.839 1.730 138.3 22.9 18.0
2009 05 29 13 01.65 -08 12.5 0.881 1.716 129.7 27.0 18.1
2009 06 08 13 13.19 -05 59.5 0.936 1.707 121.9 30.3 18.2
2009 06 18 13 27.30 -04 27.3 1.002 1.702 115.0 32.8 18.3
2009 06 28 13 43.53 -03 32.3 1.076 1.702 108.8 34.4 18.5
2009 07 08 14 01.46 -03 08.7 1.157 1.708 103.4 35.4 18.6
2009 07 18 14 20.69 -03 10.1 1.244 1.718 98.4 35.8 18.8
2009 07 28 14 40.97 -03 30.6 1.336 1.733 93.9 35.8 19.0
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2009 CBAT
2009 April 15 (CBET 1767) Daniel W. E. Green
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