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IAUC 6443: N Sgr 1996; C/1996 J1

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                                                  Circular No. 6443
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science)
Phone 617-495-7244/7440/7444 (for emergency use only)


NOVA SAGITTARII 1996
     S. Nakano, Sumoto, Japan, reports the discovery of an apparent
nova by Yukio Sakurai (Mito, Ibaragi-ken) on a Fuji G400 film taken
on July 11.590 UT using a 300-mm f/2.8 camera lens; the star was
present at mag 10 on both July 11.6 and 12.6.  T. Kojima (YGCO
Chiyoda Observatory) measured the nova's position and magnitude on
a CCD image taken with a 0.25-m f/6.0 reflector on July 12.673:
R.A. = 18h23m42s.49, Decl. = -18o07'15".0 (equinox 2000.0), R =
10.1.
     R. M. Wagner and P. Martini, Ohio State University; S. G.
Starrfield, Arizona State University; and G. D. Schmidt,
University of Arizona, obtained a spectrum (range 320-670 nm,
resolution 0.35 nm) of the nova at the Multiple Mirror Telescope on
Aug. 4.221 UT, showing emission lines of the Balmer series of
hydrogen, Fe II, and Ca II, as well as others, all exhibiting P-Cyg
profiles.  While the spectrum has not yet been reduced for
velocities and other numbers, it appears typical of a relatively
slow nova in its early decline phase.  The MMT encoders yielded the
following position end figures for the nova (cf. Kojima's position,
above):  42s.17, 12".6.
     A. Gilmore and P. Kilmartin, Mount John University Observatory,
report the following photometry of the nova obtained on July 13.498:
V = 10.59, U-B = +0.20, B-V = +1.10, V-R = +0.80, V-I = +1.55.
They remark that the U count was low but fairly consistent, and the
colors look more like those of a reddened nova than a normal star.
For comparison, a star about 1' north of the nova had V = 10.63,
U-B = +0.62, B-V = +1.02, V-R = +0.58, V-I = +1.14.


COMET C/1996 J1 (EVANS-DRINKWATER)
     Ephemeris from orbital elements on MPC 27428:

1996 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
July 26    11 41.27   -18 53.6   2.861   2.546   62.0   20.6   12.8
Aug.  5    11 55.56   -19 16.8   2.857   2.440   56.0   20.2   12.7
     15    12 11.54   -19 51.6   2.843   2.333   50.5   19.6   12.4
     25    12 29.23   -20 36.6   2.821   2.228   45.2   18.8   12.2
Sept. 4    12 48.71   -21 30.0   2.788   2.123   40.4   17.9   12.0
     14    13 10.10   -22 29.3   2.748   2.020   35.8   16.9   11.7
     24    13 33.53   -23 31.9   2.700   1.918   31.5   15.9   11.5

                      (C) Copyright 1996 CBAT
1996 August 4                  (6443)            Daniel W. E. Green

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