Central Bureau for Astronomical Telegrams
IAUC 3910: SN IN NGC 4419; 1983n; 1984 AB
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Circular No. 3910
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM Telephone 617-864-5758
SUPERNOVA IN NGC 4419
L. Rosino, Asiago Astrophysical Observatory, telexes that
spectra obtained on Jan. 9, 10 and 11 by Rafanelli and Iijima with
the 1.82-m and 1.22-m telescopes match well with those of supernovae
of type I, except that the typical absorption feature at 615
nm is blueshifted to 600 nm. The other emission and absorption
features are all displaced toward the blue by ~ 8000 km/s relative
to normal type-I supernovae. The following magnitudes were estimated
from Asiago Schmidt plates on Jan. 10: V = 12.8, B-V = +0.3.
PERIODIC COMET CROMMELIN (1983n)
Several observers have noted that this test comet for the
International Halley Watch continues to be a very difficult object.
Only the following recent positions have been reported:
1984 UT R.A. (1950.0) Decl. m2 Observer
Jan. 1.98703 21 36 41.57 + 6 10 34.6 18.5 McCrosky
3.08750 21 39 51.47 + 6 07 59.1 Everhart
R. E. McCrosky (Oak Ridge Observatory). 1.5-m reflector.
E. Everhart (Chamberlin Obs., field station). 0.4-m reflector.
1984 AB
A minor planet recently discovered by E. Helin at Palomar
seems to have an orbit (a = 1.53 AU, e = 0.086, i = 12 deg: see MPC
8467) resembling that of Mars. The observed arc is only 4 days,
and the orbit could be rather larger (with a up to 1.9 AU), but
the inclination would then be too high for a normal Hungaria
object. This ephemeris is from MPC 8468:
1984 ET R.A. (1950.0) Decl. p r Mag.
Jan. 1 6 11.73 +24 35.9 0.554 1.535 16.2
11 5 54.57 +27 35.0
21 5 41.28 +30 08.1 0.592 1.511 16.8
31 5 34.15 +32 11.0
Feb. 10 5 34.01 +33 47.5 0.691 1.487 17.3
20 5 40.52 +35 02.2
Mar. 1 5 52.75 +35 57.6 0.816 1.465 17.8
11 6 09.80 +36 33.7
21 6 30.71 +36 49.4 0.946 1.444 18.2
1984 January 16 (3910) Brian G. Marsden
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