Central Bureau for Astronomical Telegrams
IAUC 3710: 1982h; 2 Vul AND HR 7739; 1980b
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Read IAUC 3711
Circular No. 3710
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
COMET HARTLEY (1982h)
Malcolm Hartley, U. K. Schmidt Telescope Unit, reports his discovery
of a comet with the 1.2-m Schmidt telescope at Siding Spring.
There is a faint halo around the trail on the plate, mag ~ 15. The
comet was confirmed by M. P. Candy and Flynn at Perth Observatory:
1982 UT R. A. (1950) Decl. Observer
July 11.46714 16 49 29.3 - 7 01.9 Hartley
13.46319 16 50 08 - 6 18 Candy
2 VULPECULAE AND HR 7739
P. K. Barker, Department of Astronomy, University of Western
Ontario, telexes: "Intensifier-dissector-scanner observations on
July 5 have allowed discovery of two new bright Be stars. Observations
of 2 Vul (= ES Vul = HR 7318 = HD 180968; star type B1 IV) in
H-alpha show centrally-reversed emission. The V and R emission peaks
are separated by 500 km/s, with respective V, R and central-absorption
intensities 1.1, 1.15 and 0.9; IDS observations on 1980 Sept.
24 show H-alpha purely in absorption with central intensity 0.85. HR
7739 (= HD 192685; type B3 V) has a weak and extremely asymmetric
absorption profile at H-alpha. Absorption is deepest (intensity 0.8) at
the line-rest wavelength. The profile is steep on the red side, indicating
partial filling of the absorption by redshifted emission.
Shallow blueward absorption extends 1.5 nm from line-center."
COMET BOWELL (1980b)
J. Koornnsef and H.-E. Schuster, European Southern Observatory,
report that comet Bowell 1980b was observed with the 3.6-m telescope
at La Silla on July 1.31 UT, and the following magnitudes
were measured: J = 12.60, H = 12.45, K = 12.37. The diaphragm had
a diameter of 7".5, and this was used with an east-west chopper
throw of 18".
Total visual magnitude estimates: May 25.95 UT, 11.4 (J. C.
Merlin, Le Creusot, France, 0.26-m reflector); June 16.93, 10.7
(Merlin); 18.96, 10.3 (Merlin); 19.94, 10.3 (Merlin); 21.14, 11.2
(J. E. Bortle, Stormville, NY, 0.32-m reflector); 25.16, 11.2
(Bortle); July 10.12, 11.3 (Bortle).
1982 July 14 (3710) Daniel W. E. Green
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