[IAUC] CBET 1352: 20080423 : NOVA SAGITTARII 2008

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                                                  Electronic Telegram No. 1352
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS en CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT en CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html


NOVA SAGITTARII 2008
     U. Munari and A. Siviero, Istituto Nazionale di Astrofisica, Padova
Astronomical Observatory; and S. Moretti, S. Tomaselli, A. Maitan, F.
Castellani, S. Dallaporta, and P. Ochner, ANS ("Asiago Novae and Symbiotic
stars") collaboration, write that this nova (CBETs 1342, 1344; IAUC 8937)
is on a steady rise toward maximum that is taking it into the realm of
naked-eye visibility.  The brightening slope over the last four days has
been -0.73 mag/day in B, -0.69 mag/day in V, and -0.71 mag/day in I_c,
bringing the nova from B = 9.43, B-V = +0.81, V-I_c = +2.15 on Apr. 19.61
UT to B = 6.86, B-V = +1.21, V-I_c = +1.18 on Apr. 23.12.  The bluest
colors were reached around Apr. 21.7, with B-V = +0.57 and V-I_c = +0.68.
     Photoelectric magnitudes from M. M. M. Santangelo, Capannori, Italy:
Apr. 20.092 UT, V = 8.80, B-V = +1.06 (0.30-m telescope + SSP-5A photometer;
comparison star HD 164719).


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2008 CBAT
2008 April 23                    (CBET 1352)              Daniel W. E. Green