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Date: Sun, 12 Dec 1993 21:40:15 +0200
From: granslo@argo.uio.no
Subject: Nova Cassiopeiae 1993
*** A BRIGHT NOVA IN CASSIOPEIA ***
Syuichi Nakano has reported the discovery of a nova by Kazuyoshi Kanatsu of
Matsue, Shimane, Japan on an exposure with a 55-mm f/2.8 lens from December
7.47 UT. The emulsion was T-Max 400 and the magnitude was estimated as 6.5.
The discovery was confirmed by the discoverer and other observers on Dec 11.
According to an exposure by A. Tago it was fainter than magnitude 10.0 on
December 5.44 UT.
K. Kawanishi has determined the following accurate position (equinox 1950.0):
R.A. = 23h 39m 22s.26, Decl. = +57d 14' 23".7. The corresponding 2000.0
position is RA = 23h 41m.79, Decl. = +57d 31'.0. It is located less than two
degrees west of the supergiant variable Rho Cassiopeiae. The discovery
announcement appeared in IAU Circular No. 5902.
The nova has remained bright since discovery and the latest estimates place
it near magnitude 6.5. It is clearly visible in binoculars. For persons who
wish to observe the nova the following comparison stars may be used:
Ident. R.A. (2000.0) Decl. V B-V Spec. SAO Source
h m o '
1 23 47.03 +57 27.1 5.52 +1.66 K3 35761 HIC
Ag 23 41.91 +57 15.6 6.24 +1.0 G8 35682 HIC
2 23 49.20 +58 57.8 6.36 +0.40 F2 35798 HIC
3 23 38.37 +58 39.2 6.94 +1.02 K1 35631 HIC
4 23 41.01 +57 50.3 7.23 +0.19 Am 35665 HIC
The V-magnitudes, B-V colour indices and spectral types are taken from
The Hipparcos Input Catalogue (HIC). Comparison stars 1, 2, 3 and 4 were
identified in The Astronomer Electronic Circular No. 797.
Kind regards,
Bjorn H. Granslo
granslo@argo.uio.no
Return to the Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
