Central Bureau for Astronomical Telegrams
IAUC 4834: 1989 PB; MV Lyr; VY Aqr; R CrB
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Circular No. 4834
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
1989 PB
Continuation to the ephemeris on IAUC 4833:
1989 ET R.A. (1950) Decl. Delta r V
Aug. 22 0 12.50 +22 37.8 0.039 1.039 11.6
23 0 26.74 +32 52.5
24 0 52.68 +46 37.5 0.029 1.022 11.5
25 1 51.87 +62 44.8
26 4 43.1 +74 29.4 0.028 1.005 12.7
27 8 23.2 +71 02.7
28 9 46.03 +62 06.2 0.037 0.988 15.0
29 10 18.90 +54 34.5
30 10 35.80 +48 51.9 0.051 0.971 17.1
31 10 45.96 +44 32.3
Sept. 1 10 52.71 +41 11.7 0.067 0.953 18.7
MV LYRAE
L. Rosino, Asiago Astrophysical Observatory, reports that this
cataclysmic variable is undergoing a period of remarkable activity and
provides photometry using the Andronov-Shugarov comparison sequence:
July 7.0 UT, B = 14.3; Aug. 1.9, B = 13.65; 2.9, V = 14.25; 4.0, B =
14.58, V = 15.42; 7.0, B = 14.37, V = 14.54; 8.0, V = 15.25.
VY AQUARII
On Aug. 12 D. Buczynski, The Astronomer, reported independent
detections by K. Medway, Southampton, England, and by P. Schmeer,
Bischmisheim, West Germany, of another outburst of this object.
Word was subsequently received of a earlier, apparently independent,
detection by H. Narumi, Ehime, Japan. Visual magnitude estimates:
July 30.94 UT, [14.3 (A. Boattini, Monte Autore, Italy); Aug. 11.71,
[15.3 (R. H. McNaught, Coonabarabran, N.S.W.); 12.64, 11.2 (Narumi);
12.90, 11.2 (Medway); 12.91, 11.1 (Schmeer); 13.40, 11.6 (McNaught);
13.81, 11.8 (McNaught); 14.06, 12.3 (Schmeer); 14.38, 12.5 (McNaught).
R CORONAE BOREALIS
Visual magnitudes: Aug. 8.95 UT, 7.0 (J. D. Shanklin, Cambridge,
England); 10.27, 7.0 (C. Spratt, Victoria, BC); 12.5, 7.1 (Narumi).
1988 August 14 (4834) Brian G. Marsden
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