Central Bureau for Astronomical Telegrams
IAUC 4821: V745 Sco; V854 Cen; AM Her; V348 Sgr
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Read IAUC 4822
Circular No. 4821
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
V745 SCORPII
R. H. McNaught provides the following precise position, measured
from a 10-s exposure with the Uppsala Southern Schmidt on Aug. 1.4 UT:
R.A. = 17h52m04s.72, Dec. = -33d14'31".8 (equinox 1950.0). This is
reasonably consistent with the position by Plaut for the 1937 outburst
(end figures 04s, 02"), but Duerbeck's tentative identification of the
object on the SRC J survey plate is not valid. McNaught notes that
the star does appear at mag 21 on that plate (taken on 1974 June 20)
and is located 19.5 mm to the right and 29.2 mm up from the southeast
corner of Duerbeck's chart; it is at the top left end of a curve of
faint stars. The star also appears at mag about 18.5 on the ESO B
survey (1976 Apr. 23, the end figures of the measured position being
04s.69, 31".3). It is faint on an R survey plate (1979 July 30) but
significantly brighter on an I survey plate only four days later. No
image appears on the Franklin Adams (1913 May 10) or Papadopoulos
(1973 June 24) charts, and the object was still below the limit (mag
12) of a T-Max 400 exposure by McNaught on 1989 July 27.49 UT.
V854 CENTAURI
W. A. Lawson, Mount John University Observatory, informs us that,
contrary to the report on IAUC 4814, this R-CrB-type star is not in
decline. Visual magnitude estimates by V. F. de Assis Neto, Sao
Francisco de Oliveira, Brazil: July 2.06 UT, 7.5; 5.11, 7.6;
10.07, 7.7; 14.05, 7.9.
AM HERCULIS
Visual magnitude estimates: May 21.93 UT, [14.6 (S. Korth,
Dusseldorf, West Germany; correction to IAUC 4783); 25.00, 15.8:
(Korth); 26.99, 14.8 (Korth); June 14.05, 14.6 (M. Verdenet, Bourbon-
ancy, France); 27.87, [14.3 (A. Boattini, Florence, Italy);
July 28.55, 13.6 (T. Kato, Kyoto, Japan); 30.89, 13.8 (Boattini).
V348 SAGITTARII
Visual magnitude estimates: May 17.09 UT, [15.0 (M. Verdenet,
Bourbon-Lancy, France); June 3.87, 12.6 (A. Pearce, Perth, Western
Australia); 7.87, 12.6 (Pearce); 14.04, 12.2 (Verdenet); 24.59, 12.5
(Pearce); 30.63, 12.7 (J. Bortle, Stormville, NY); July 9.13, [14.0
(Bortle).
1989 August 1 (4821) Brian G. Marsden
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