Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 8854: V5558 Sgr; THE EDGAR WILSON AWARD 2007; 188P

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 8853  SEARCH Read IAUC 8855

View IAUC 8854 in .dvi, .ps or .PDF format.
IAUC number

                                                  Circular No. 8854
Central Bureau for Astronomical Telegrams
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
URL http://www.cfa.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)

     R. W. Russell, D. K. Lynch, and R. Pearson, The Aerospace
Corporation; M. L. Sitko, University of Cincinnati and Space
Science Institute; H. B. Hammel, Space Science Institute; L.
Beerman, University of Cincinnnati; and W. Golisch, Infrared
Telescope Facility (IRTF), NASA, report on observations made of
V5558 Sgr (cf. IAUC 8832) using the IRTF (+ BASS) on July 9 UT.
The spectrum was smooth and featureless, roughly following a 2000-K
blackbody curve, although there were minor departures from a true
blackbody.  If the object is a classical nova, then the F-type
spectrum (expected near peak brightness) is probably significantly
reddened.  The narrowband [N] magnitude was approximately 2.0.
     Visual magnitude estimates, most forwarded by E. Waagen, AAVSO:
Apr. 21.136 UT, 9.9 (P. Schmeer, Bischmisheim, Germany); 30.090,
9.6 (F. Vohla, Altenburg, Germany); May 5.347, 9.3 (L. Shotter,
Uniontown, PA, U.S.A.); 18.504, 9.0 (S. Kerr, Glenlee, Qld.,
Australia); 24.072, 8.6 (A. Amorim, Florianapoulos, Brazil); June
5.944, 8.5 (A. Kammerer, Malsch, Germany); 11.987, 8.4 (J. Speil,
Walbrzych, Poland); 24.122, 8.4 (J. Bortle, Stormville, NY, U.S.A.);
26.861, 8.1 (S. Bolzoni, Busto Arsizio, Italy); 29.396, 7.5 (H.
Matsuyama, Kanimbla, Qld., Australia); July 3.093, 7.5 (Bortle);
7.903, 6.7 (T. Scarmato, Calabria, Italy); 11.866, 6.6 (K. Hornoch,
Vohancice, Czech Republic).

     The Smithsonian Astrophysical Observatory announces that the
2007 Edgar Wilson Award for the discovery of comets (cf. IAUC 6936,
8730) is being divided among the following three individuals for
four different comets:  John Broughton (Reedy Creek, Qld.,
Australia) for C/2006 OF_2 (cf. IAUC 8756); David H. Levy (Tucson,
AZ, U.S.A.) for P/2006 T1 (cf. IAUC 8757); and Terry Lovejoy
(Thornlands, Qld., Australia) for C/2007 E2 (cf. IAUC 8819) and
C/2007 K5 (cf. IAUC 8840).

     Comet P/1998 S1 = P/2007 J7 (cf. IAUC 8853) has been assigned
the permanent number 188P (cf. MPC 60060).

                      (C) Copyright 2007 CBAT
2007 July 11                   (8854)            Daniel W. E. Green

Read IAUC 8853  SEARCH Read IAUC 8855

View IAUC 8854 in .dvi, .ps or .PDF format.

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

Valid HTML 4.01!