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IAUC 8898: V598 Pup; BRIGHT N IN M31; Poss. N IN Ser

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                                                  Circular No. 8898
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)

     N. N. Samus, Institute of Astronomy, Russian Academy of
Sciences, informs the Central Bureau that the GCVS designation V598
Pup has been assigned to the apparent nova initially posted by Read
et al. (http://www.astronomerstelegram.org/?read=1282) as a bright
x-ray transient (as seen with the XMM-Newton satellite on Oct. 8 at
0.2-2 keV) that is located at R.A. = 7h05m42s.7, Decl. = -38o14'42"
(equinox 2000.0), and subsequently found as a bright star optically
(within the reported 8" x-ray error circle) by Torres et al. (ibid.,
/?read=1285), who explain that their spectroscopy obtained on Nov.
16.34 UT reveal numerous features suggestive of a nova in the
auroral phase.  E. O. Waagen, AAVSO, writes that S. Dvorak
(Clermont, FL, U.S.A.) reports V = 10.28 and B = 11.25 for V598 Pup
from CCD images obtained on Nov. 18.38; A. Henden, AAVSO, has
measured the following position end figures from Dvorak's V image:
42".51 (+/- 0".05), 39".3 (+/- 0".1).  Other CCD magnitudes
forwarded by the AAVSO for the apparent nova:  Nov. 19.27-19.37,
11.6 (A. Oksanen, San Pedro de Atacama, Chile, unfiltered); 19.506,
V = 10.17 (W. Dillon, Missouri City, TX, U.S.A.).  Visual magnitude
estimate by A. Amorim, Florianopolis, Brazil:  Nov. 20.036, 9.9.

     S. Nakano, Sumoto, Japan, reports the discovery by Koichi
Nishiyama (Kurume, Fukuoka-ken, Japan) and Fujio Kabashima (Miyaki-
cho, Saga-ken, Japan) of an apparent bright nova in M31 on seven
20-s unfiltered CCD frames taken around Nov. 17.57 UT using a 40-cm
reflector.  The new star, designated M31N 2007-11d at the CBAT
website that catalogues M31 apparent novae
(http://www.cfa.harvard.edu/iau/CBAT_M31.html) and located at R.A.
= 0h44m54s.60, Decl. = +41o37"40".0 (equinox 2000.0), was first
detected at mag 17.7 on Nov. 16.51 and reached mag 14.9 on Nov.

     Nakano also reports that Nishiyama and Kabashima have found a
variable star located at R.A. = 18h09m24s.25, Decl. = -7o22"14".2
(equinox 2000.0), with the following unfiltered CCD magnitudes
(200-mm camera lens, except 40-cm reflector on Nov. 20):  Oct.
2.485 UT, 12.8; 12.501, 12.3; Nov. 19.358, 10.5; 19.387, 10.7;
20.414, 11.2; 20.430, 11.1; 20.431, 11.0.  A USNO-B1.0 catalogue
star (mag 18.5) has position end figures 24s.30, 13".5.

                      (C) Copyright 2007 CBAT
2007 November 20               (8898)            Daniel W. E. Green

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