Central Bureau for Astronomical Telegrams
IAUC 3456: SNe; 1979l; 1980 S 2
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Circular No. 3456
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
SUPERNOVAE
B. Szeidl, Konkoly Observatory, reports that M. Lovas has
discovered three supernovae in anonymous galaxies as follows:
No. 1980 UT R.A. (1950) Decl. mpg dR.A. cos Decl. dDecl.
1 Feb. 21 12 17.9 +31 27 15.5 + 9" - 9"
2 Feb. 22 11 17.0 +54 44 16.0 +16 0
3 Feb. 22 13 43.4 +48 00 17.5 - 7 0
dR.A. cos Decl. and dDecl. represent the differences supernovae minus nuclei.
COMET BRADFIELD (1979l)
C. B. Cosmovici, Max-Planck-Institut fur Extraterrestrische
Physik; and S. Ortolani, Asiago Astrophysical Observatory, report:
"A 10-min exposure (Kodak 103a-O emulsion) with the 0.90-m Schmidt
telescope on Feb. 4.78 UT shows a narrow plasma tail, 1o.73 long,
containing several filaments. The dust tail is 16' long, and the
visible coma has a diameter of 5'. Spectrograms obtained between
Feb. 4 and 12 with the 1.20-m and 1.82-m telescopes (dispersion 12
x 10**-6; ITT tube; 120-min exposure) show strong C2, CN and the C3
band in the visible region (388.0-563.5 nm); H2O+ is also present
at 614.8 nm and O I at 633.0 nm. The near infrared is dominated by
cometary bands at 771.0 and 773.6 nm; they could be identified with
the Phillips (3-0) band of C2."
1980 S 2
B. A. Smith, Lunar and Planetary Laboratory, reports that H. J.
Reitsema, S. M. Larson and himself have made CCD observations of a
Saturnian satellite, clearly separated from the edge-on rings. The
object, of magnitude ~ 14.5 (at wavelength 0.9 um), was evidently
very close to greatest elongation, ~ 25" west of the center of
Saturn, on Feb. 23.406 UT; some deceleration was evident during the
observations, extending over ~ 1 hr with the 1.5-m reflector.
It is plausible that 1980 S 2 = 1980 S 1 (IAUC 3454), and six
intervening revolutions yield P ~ 16h40m, in close agreement with
1966 S 2 (Fountain and Larson 1978, Icarus 36, 92; Aksnes and
Franklin 1978, ibid. 36, 107, orbits 15 or 16). Identity 1980 S 2
= 1979 S 7 would imply P = 16h38m (109.5 intervening revolutions) or
16h47m (108.5 revolutions); 1979 S 2 (IAUC 3417) has P ~ 16h46m.
1980 February 29 (3456) Brian G. Marsden
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