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Circular No. 6140
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)
Phone 617-495-7244/7440/7444 TWX 710-320-6842 ASTROGRAM CAM
MARSDEN@CFA.HARVARD.EDU or GREEN@CFA.HARVARD.EDU (science)
NOVA CENTAURI 1995
R. H. McNaught, Anglo-Australian Observatory, communicates the
following precise position by G. J. Garradd (Loomberah, N.S.W.,
0.25-m reflector): R.A. = 13h02m31s.99, Decl. = -60d11'38".1 (equinox
2000.0, uncertainty 0".3 in each coordinate). On the measured CCD
frame the star is not blended with the GSC star mentioned by W. Liller.
P. M. Kilmartin, Mt. John Observatory, communicates a similar position
(end figures 31s.85, 38".2; residuals of six PPM stars average 0".2),
measured by her from an astrograph film taken on Feb. 25.49 UT by
A. C. Gilmore, who also provides further photometry (cf. IAUC 6139):
Feb. 25.62, V = 8.30, U-B = -0.70, B-V = +0.28, V-R = +1.09, V-I =
+1.23 (airmass 1.04).
SUPERNOVA 1995G IN NGC 1643
McNaught also reports the following precise position, measured by
him from a 10-min exposure by C. P. Cass with the U.K. Schmidt telescope:
R.A. = 4h43m44s.22, Decl. = -5d18'53".8 (equinox 2000.0, PPM,
uncertainty 0".3 in each coordinate). The offsets from the galaxy
center are 4".5 east, 16".1 north. There is a nearby star of mag about
17 at end figures 43s.50, 10".3.
SUPERNOVA 1995E IN NGC 2441
P. Molaro and G. Vladilo, Trieste Observatory; and N. A.
Walton, Royal Greenwich Observatory, La Palma, report that
spectrograms (range 350-870 nm, resolution FWHM about 0.6 nm)
obtained with the 4.2-m William Herschel Telescope (+ ISIS
spectrograph) on Feb. 23.7 UT confirm this object to be a type Ia
supernova. The spectrum strongly resembles that of SN 1981B
at maximum. Major absorption features are Ca II (857.9 nm),
O I (777.3 nm), Mg (448.1 nm) and Si II (635.5, 505.1, 412.9 nm),
observed at expansion velocities between -10 000 and -13 000 km/s.
COMET 6P/D'ARREST
CCD observations (no flat fielding) by L. H. Wasserman, R. L.
Millis and D. G. Schleicher with the 1.1-m Hall telescope at the
Lowell Observatory: Feb. 2.53 UT, R = 21.5, I = 21.9; 3.50, I = 23.
COMET 41P/TUTTLE-GIACOBINI-KRESAK
CCD R magnitudes by S. M. Larson and C. W. Hergenrother with the
Steward Observatory's 2.3-m reflector, Kitt Peak: Jan. 28.19 UT, 21.2;
28.20, 21.8; 29.28, 21.9.
1995 February 25 (6140) Brian G. Marsden
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