Central Bureau for Astronomical Telegrams
IAUC 8985: C/2008 N2-N11, C/2008 O1,, C/2008 O4
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Circular No. 8985
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)
COMETS C/2008 N2-N11, C/2008 O1, AND C/2008 O4 (SOHO)
Further to IAUC 8984, additional near-sun presumed comets have
been found on SOHO website images -- all Kreutz sungrazers except
for C/2008 N4 (a Kracht-group member that was suggested by R.
Kracht as being identical with C/2002 S7; cf. IAUC 7986, plus the
discussion and analysis on MPEC 2008-P60) and C/2008 N10 (no known
group). C/2008 N2 was very bright (mag about 4.5) and elongated in
C3 images, and showed a diffuse tail about 0.5 deg long in C2
images (where it appeared headless inside about 6 solar radii
(apparent); SECCHI COR2-A images on July 3-4 showed a thin tail
much like that seen in C2 images, and a tail also was seen to form
in the last images obtained with the COR2-B camera on July 4.
C/2008 N3 was small and slightly diffuse (mag about 7.5). C/2008
N4, C/2008 N10, and C/2008 N11 were small and stellar in
appearance (mag about 7.5). C/2008 N5 was quite faint (mag about
7.5) and stellar in appearance in C3 images, while it was slightly
diffuse with no tail in C2 images. C/2008 N6 was small and stellar
in appearance (mag about 7.5) in C3 images, but slightly diffuse in
C2 images. C/2008 N7 was small and slightly diffuse (mag about 8).
C/2008 N8 was quite bright (mag about 6) and slightly elongated in
C3 images; it was teardrop-shaped and slightly diffuse in C2 images.
C/2008 N9 was small and stellar in appearance (mag about 7) in C3
images, but diffuse and slightly elongated in C2 images. C/2008 O4
was stellar in appearance, peaking at mag about 5.5 around Sept.
6.83 UT.
Additional astrometry of C/2008 O1 (cf. IAUC 8962) was
published on MPEC 2008-P33, with the note by K. Battams that it
appeared very small and stellar in appearance, peaking at mag about
6.
Comet 2008 UT R.A.(2000)Decl. Inst. F MPEC
C/2008 N2 July 2.888 6 35.8 +18 46 C3/2* BZ 2008-P60
C/2008 N3 3.913 6 44.7 +21 37 C2 RK 2008-P60
C/2008 N4 4.104 6 45.6 +23 14 C2 TH 2008-P60
C/2008 N5 4.388 6 43.7 +20 36 C3/2 AK 2008-P60
C/2008 N6 5.238 6 44.5 +19 23 C3/2 HS 2008-S67
C/2008 N7 6.104 6 53.7 +21 31 C2 TH 2008-S67
C/2008 N8 7.654 6 52.5 +18 45 C3/2 BZ 2008-S68
C/2008 N9 8.321 6 59.2 +20 23 C3 BZ 2008-S68
C/2008 N10 10.579 7 14.7 +21 52 C2 RK 2008-S68
C/2008 N11 12.513 7 15.1 +20 00 C3 HS 2008-S68
C/2008 O4 25.421 8 12.5 +20 17 C2 MK 2008-S67
(C) Copyright 2008 CBAT
2008 September 30 (8985) Daniel W. E. Green
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