Central Bureau for Astronomical Telegrams
IAUC 3527: A0535+262; SS 433; (201)
The following International Astronomical Union Circular may be linked-to from your own Web pages, but must not otherwise be redistributed (see these notes on the conditions under which circulars are made available on our WWW site).
Read IAUC 3528
Circular No. 3527
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
A0535+262
N. Oda and the Hakucho Team, Institute of Space and Aeronautical
Science, University of Tokyo, report: "The x-ray nova discovered
with the y-axis scanning detectors of Hakucho on Oct. 2 (cf.
IAUC 3525) was confirmed to be A0535+262. Since Oct. 10, z-axis
detectors have been watching the source, and the error circle for the
source location was refined to be 0o.5 in radius centered at the
position of A0535+262. Typical 104-s x-ray pulsation was also
observed. The intensity is ~ 0.7 Crab (1-10 keV) as of Oct. 12."
SS 433
T. Mazeh, E. N. Leibowitz, O. Lahav and Y. Sheffer, Wise
Observatory, telex: "Fifty-four nightly averages of the V-magnitude of
SS 433, measured between 1979 July and Oct., and 23 averages
measured between 1980 Nay and Sept., indicate a photometric period of
6d.36 +/- 0d.08. The amplitude of the systematic variation is 0.3 mag
(cf. Kemp and Barbour, IAUC 3484). The B-V index shows no dependence
upon the phase of this periodicity."
(201) PENELOPE
J. Surdej, Institut d'Astrophysique de Liege and European
Southern Observatory; and N. Cramer, Observatoire de Geneve,
communicate: "UBV photometry with the ESO 5-m telescope and seven-color
photometry with the Geneva 7-m telescope were performed for (201)
Penelope at La Silla on Oct. 6, 11 and 17, and Oct. 8 and 14,
respectively. This minor planet is found to have a rotation period
of 3h45m30s +/- 18s (see also IAUC 3523), and its lightcurve displays
two distinct maxima and minima with a total amplitude V ~ 0.52 mag
The color indices B-V (~ +0.70) and U-B (~ +0.23) show noticeable
variations (0.05 and 0.06 mag, respectively) during a single period.
Furthermore, there appear to be shifts iin phase between the V, B-V
and U-B measurements reaching ~40 min at some points of the
lightcurve. These results have been confirmed at each run of
observations. Whereas large albedo variations over the surface of this
object are probably responsible for the interesting observed features,
other causes cannot be entirely excluded. Further observations
(photometry, infrared, spectrophotometry, polarimetry, etc.) are
highly desirable."
1980 October 20 (3527) Daniel W. E. Green
Read IAUC 3528
Our Web policy. Index to the CBAT/MPC/ICQ pages.
