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IAUC 4846: 1989s; 1989O; 1989M; 1989o

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IAUC number 

                                                Circular No. 4846
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM     EASYLINK 62794505
MARSDEN or GREEN@CFA.BITNET    MARSDEN or GREEN@CFAPS2.SPAN


COMET HELIN-ROMAN (1989s)
     Eleanor F. Helin reports her discovery with Brian P. Roman
of a new comet.  R. Crockett assisted with the 0.46-m Palomar
Schmidt telescope observations.  The image is trailed and condensed,
with a diffuse margin and hint of tail to the east-northeast.
The following precise measurements are by Roman:

     1989 UT             R.A. (1950) Decl.        m1
     Sept. 5.16007   17 51 29.20   - 6 14 08.5   14.0
           5.18507   17 51 23.61   - 6 17 10.0


SUPERNOVA 1989O IN MCG 6-1-26
     J. Mueller and D. Mendenhall report their discovery of a
supernova on a red plate exposed Sept. 3 UT with the 1.2-m Oschin
Telescope in the course of the Second Palomar Sky Survey.  The
object (magnitude 18) is located 15".6 east and 9" north of
the center of MCG 6-1-26 (R.A. = 0h18m.4, Decl. = +34 13', equinox
1950.0).  A spectrum by J. Mould with the Palomar 5-m reflector
(+ 4-shooter spectrograph) on Sept. 4 shows a broad absorption
at 610 nm, suggesting a type-I supernova in a low-redshift galaxy.


SUPERNOVA 1989M IN NGC 4579
     Visual magnitude estimates (cf. IAUC 4838):  July 29.85 UT,
12.9 (A. Boattini, Florence, Italy; correction to IAUC 4824);
Aug. 20.12, 14.6 (J. Bryan, Georgetown, TX).


PERIODIC COMET BRORSEN-METCALF (1989o)
     Total visual magnitude estimates (cf. IAUC 4840):  Aug. 26.35
UT, 6.0 (J. E. Bortle, Stormville, NY, 10x50 binoculars); 27.48, 6.3
(M. Magee, Tucson, AZ, 0.09-m reflector); 30.11, 5.7 (R. Haver,
Monte Autore, Italy, 10x50 binoculars; 2.5 deg tail in p.a. 307 deg);
31.36, 5.9 (J. DeYoung, Mt. Vernon, VA, 9x63 binoculars); Sept. 1.15,
5.3 (G. Keitch, Wrington, Avon, England, 10x50 binoculars; 3 deg tail
in p.a. 310 deg); 2.45, 5.5 (R. A. Keen, Mt. Thorodin, CO, 8x40
binoculars; 3 deg tail in p.a. 310 deg); 4.50, 5.6 (C. S. Morris,
Pine Mountain Club, CA, 10x50 binoculars; tail length about 8 deg);
5.21, 5.4 (A. Pereira, Cabo da Roca, Portugal, 9x34 binoculars).


1989 September 5               (4846)             Daniel W. E. Green

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