Central Bureau for Astronomical Telegrams
IAUC 5313: Prob. N IN Sgr; NGC 5128; 1991am; 1991q
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Circular No. 5313
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
PROBABLE NOVA IN SAGITTARIUS
F. M. Bateson, Royal Astronomical Society of New Zealand,
reports (via A. Gilmore, Mount John University Observatory) the
discovery of a nova (mpg = 8.5), on a photograph taken July 29.406 UT,
by P. Camilleri, Cobram, Victoria, Australia. The object's position
is given as R.A. = 18h10m.9, Decl. = -32 14' (equinox 1950.0). The
following visual magnitude estimates have been reported: July
29.504, 7.0 (W. Goltz, Tarnagulla, Victoria); 29.505, 7.3 (P.
Williams, Heathcote, New South Wales); 30.096, 7.9 (J. E. Bortle,
Stormville, NY); 30.33, 8.2 (A. F. Jones, Nelson, N.Z.); 30.438, 8.1
(D. A. J. Seargent, The Entrance, N.S.W.).
NGC 5128
E. Jourdain, L. Salotti, and M. Gilfanov, on behalf of the
GRANAT team (Centre d'Etude Spatiale des Rayonnements, Toulouse;
Service d'Astrophysique du CEA, Saclay; Space Research Institute,
Moscow), report: "During an observation of the radio galaxy Centaurus
A (= NGC 5128) with the Sigma telescope on July 15, this galaxy
was detected in the 35- to 300-keV domain at a level close
to 100 mCrab, revealing that the source is in a high state of
emission compared to previous Sigma observations. This period would
be highly favorable for further observations with other x- or gamma-
ray telescopes or at other wavelengths."
SUPERNOVA 1991am IN MCG +06-37-006
Corrigendum. On IAUC 5312, lines 5-6, for 20) by Pollas
shows the object at R about 19. read 19) by Pollas shows the
object at R about 18.
PERIODIC COMET LEVY (1991q)
Total visual magnitude estimates (cf. IAUC 5296): July 5.38
UT, 8.4 (G. Kronk, Troy, IL, 20x80 binoculars); 10.34, 8.3 (V. F. de
Assis Neto, Sao Francisco de Oliveira, Brazil, 10x70 binoculars);
16.44, 8.3 (A. Hale, Las Cruces, NM, 10x50 binoculars); 22.46, 8.8
(D. H. Levy, Tucson, AZ, 0.41-m reflector; very faint 30' tail in
p.a. 270 deg); 25.09, 9.0 (H. Mikuz, Valun, Cres, Yugoslavia, 0.20-m
reflector).
1991 July 30 (5313) Daniel W. E. Green
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