Electronic Telegram No. 428
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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CBAT@CFA.HARVARD.EDU (science)
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V1647 ORIONIS
     D. Fedele and M. E. van den Ancker, European Southern
Observatory (ESO), report the following magnitudes regarding the
fading of the young eruptive star V1647 Ori (cf. IAUC 8284), made
with the Very Large Telescope (+ FORS2):  2004 Dec. 20.262 UT, B =
21.9, R = 17.5, I = 16.1; 2006 Jan. 2.256, B > 24.9 (not detected),
R = 21.3, I = 18.9 (measured in a 3"-diameter aperture).  Mid-infrared
observations with the ESO 3.6-m telescope (+ TIMMI2) show that on 2006
Jan. 11.170, V1647 Ori had a brightness at 12 microns of 0.9 Jy,
compared to 7.6 Jy on 2004 March 8.015.  This confirms the reports by
Kopal et al. (2005, IBVS 5661) and by Aspin and Reipurth and others
(IAUC 8600, 8681) that the eruption of V1647 Ori is ending.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2006 CBAT
2006 March 13                    (CBET 428)               Daniel W. E. Green