Central Bureau for Astronomical Telegrams
IAUC 3747: QSO 0957+561; N Sgr 1982; TY Psc; Occn OF BD +24 522 BY (690)
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Read IAUC 3748
Circular No. 3747
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
QSO 0957+561
R. Schild and T. C. Weekes, Center for Astrophysics, report:
"The A (northern) component of the twin QSO 0957+561 has been observed
to brighten by 0.15 mag in the F (650-nm) photographic band
during the interval May 15-Nov. 15. Larger brightness variations
would be expected at shorter wavelengths. Although the B component
may also have brightened by 0.06 mag, the brightness ratio of
A to B has reversed, and A is currently 0.1 mag brighter than B.
Variations in the A component are expected to precede variations
in the B component. This report is based upon two observations
with the ccd camera on the Whipple Observatory's 0.6-m telescope."
NOVA SAGITTARII 1982
Visual magnitude estimates: Oct. 18.70 UT, 8.9 (D. P. Elias,
Athens Observatory); 23.75, 10.4 (Elias); 25.72, 10.6 (Elias);
28.74, 10.4 (M. Verdenet, Bourbon-Lancy, France); Nov. 1.75, 9.7
(Verdenet); 9.73, 8.5 (Verdenet); 11.72, 8.8 (Verdenet).
TY PISCIUM
M. Verdenet, Bourbon-Lancy, France, provides the following
visual magnitude estimates: Oct. 27.7 UT, 11.7; 28.8, 12.1; 30.7,
12.3; 31.7, 12.4; Nov. 1.7, 12.3; 3.8, 12.6; 4.8, 12.7; 6.8,
[13.8; 9.8, [16.
OCCULTATION OF BD +24 522 BY (690) WRATISLAVIA
A. Lowe, Calgary Centre, Royal Astronomical Society of Canada,
reports the following visual UTC observations of this Nov. 14
event by D. P. Hube (using the 0.5-m reflector at Devon Astrophysical
Observatory) and himself (0.3-m reflector). Reaction times
have been applied. No secondary events were recorded.
Immersion Emersion Long.* Lat. Obs.
h m s s h m s s deg ' deg '
9 40 54.6 +/- 0.3 9 41 07.8 +/- 0.2 -113 02.87 +53 38.11 Lowe
(9 41 03.5) 9 41 11.5 +/- 0.5 -113 45.52 +53 23.45 Hube
The elevations of the sites were 692 m and 708 m, respectively.
* The minus sign is in accord with the new IAU convention that
longitude is measured positive to the east, negative to the west.
1982 November 29 (3747) Brian G. Marsden
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