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IAUC 9094: eta Car; Sat OF JUPITER; (50000); 228P; C/2009 M3

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IAUC number 

                                                  Circular No. 9094
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)


eta CARINAE
     K. Davidson and A. Mehner, University of Minnesota; and J. C.
Martin, University of Illinois at Springfield, on behalf of a group
using the Hubble Space Telescope, report that the central star in
eta Car has recently brightened to V = 5.1.  This includes a region
only 0".3 across, in spectra obtained with the Space Telescope
Imaging Spectrograph (STIS) on 2009 Aug. 19.  The star now
accounts for half of the total light seen in the Homunculus nebula,
compared to less than 10 percent before 1995.  In view of the
central star's 0.6-magnitude brightening since its 2006 peak
(Martin et al. 2006, A.J. 132, 2717), unsteadiness in 2007-2008,
and 0.5-magnitude increase in mid-2009, eta Car currently merits
frequent attention by additional observers.  See also
http://etacar.fcaglp.unlp.edu.ar/.


SATELLITE OF JUPITER
     Further to IAUC 8826, J. S. Blue reports that the IAU Working
Group for Planetary System Nomenclature has approved a new
designation and name for the 50th confirmed satellite of Jupiter --
that for S/2003 J 17, which was re-discovered this past August (cf.
MPEC 2009-S76):

    Jupiter L       Herse       = S/2003 J 17      IAUC 8116


(50000) QUAOAR I
     The IAU Committee on Small Bodies Nomenclature has approved
the name "Weywot" for the satellite of the transneptunian minor
planet (50000) Quaoar that was announced on IAUC 8812 (cf. MPC
67220).


COMET 228P/LINEAR
     The permanent number 228P has been assigned to comet C/2009 U2
= P/2001 YX_127 (cf. IAUC 9085; MPC 67349).


COMET C/2009 M3 (SOHO)
     Further to IAUC 9092, another Kreutz sungrazer has been found
on SOHO website images.  C/2009 M3 was stellar in appearance (peak
mag about 6.5-7) on C3 images, but slightly diffuse and elongated
in C2 images.

 Comet       2009 UT       R.A.(2000)Decl.   Inst.  F    MPEC
 C/2009 M3   June 22.700    5 57.8  +20 35   C3/2   BZ   2009-P02

                      (C) Copyright 2009 CBAT
2009 November 11               (9094)            Daniel W. E. Green

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