Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 8483: Poss. N IN Cyg; C/2004 Y12, C/2005 A2-A5; 2005 AB

The following International Astronomical Union Circular may be linked-to from your own Web pages, but must not otherwise be redistributed (see these notes on the conditions under which circulars are made available on our WWW site).

Read IAUC 8482 SEARCH Read IAUC 8484

View IAUC 8483 in .dvi, .ps or .PDF format.
IAUC number 

                                                  Circular No. 8483
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://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)


POSSIBLE NOVA IN CYGNUS
     S. Nakano, Sumoto, Japan, reports the discovery by Hideo
Nishimura (Kakegawa, Shizuoka-ken, Japan) of a possible nova (mag
9.7) on two films taken on Feb. 10.85 UT using a Pentax 6x7 camera
(+ 200-mm f/4.0 lens + Kodak T-Max 400 film; limiting mag 11).
Nishimura provided the following semi-accurate position:  R.A. =
20h09m19s, Decl. = +39o48'49" (equinox 2000.0), adding that nothing
was visible at this position on his patrol films back to 2001 Oct.
21 (including one taken on 2005 Feb. 6 with limiting mag 11).  S.
Wakuda (Yuto, Shizuoka-ken, Japan) provides position end figures
19s.05, 52".9 (average of eight measurements) from a CCD image
taken on Feb. 11.841 (the new object being at mag 9.3).  K. Kadota
(Ageo, Saitama-ken, Japan) provides position end figures 19s.09,
52".2 from an unfiltered image taken with a 0.25-m f/5.0 reflector
on Feb. 11.761 (the object at mag 8.9).  The nearest object in the
USNO-A2.0 catalogue lies 14" to the southeast (and has red mag 16.4).


COMETS C/2004 Y12 AND C/2005 A2-A5 (SOHO)
     Additional Kreutz comets (cf. IAUC 8475; YT = Y.-s. Tsai):

 Comet       2004 UT      R.A.(2000)Decl.   Inst.  F    MPEC
 C/2004 Y12  Dec. 31.113  18 57.3  -28 09   C3/2   TH   2005-C38

 Comet       2005 UT      R.A.(2000)Decl.   Inst.  F    MPEC
 C/2005 A2   Jan.  3.404  19 08.9  -25 51   C3     YT   2005-C38
 C/2005 A3         6.488  19 23.4  -26 01   C3     HS   2005-C38
 C/2005 A4        13.321  19 58.1  -25 03   C3     HS   2005-C38
 C/2005 A5        15.405  20 01.0  -22 56   C3     RK   2005-C38


2005 AB
     V. Reddy, Department of Space Studies, University of North
Dakota, Grand Forks; R. Dyvig, Quinn, SD; and P. Pravec and P.
Kusnirak, Ondrejov Observatory, report that photometric
observations obtained during Feb. 1-8 show that the Amor-type minor
planet 2005 AB (cf. MPEC 2005-A05, 2005-C48) is a binary system
with orbital period 17.9 hr.  The primary rotates with a period of
3.337 hr, and its lightcurve amplitude of 0.04 mag is indicative of
a nearly spheroidal shape.  Mutual events 0.06-0.11 mag deep
indicate a secondary-to-primary mean-diameter ratio of 0.24 or
greater.  Further observations (especially radar and spectroscopic)
are desirable.

                      (C) Copyright 2005 CBAT
2005 February 11               (8483)            Daniel W. E. Green

Read IAUC 8482 SEARCH Read IAUC 8484

View IAUC 8483 in .dvi, .ps or .PDF format.

Our Web policy. Index to the CBAT/MPC/ICQ pages.

Valid HTML 4.01!