THE ASTRONOMER Electronic Circular No 419         1990 June 7 18.02UT
Ed:Guy M Hurst, 16,Westminster Close,  Kempshott Rise,   Basingstoke,
Hants, RG22 4PP, England. Telephone:   (0256)471074  Int:+44256471074
Telex: 94082518 Answerback: TAGUY                 Microlink: MAG60138
JANET:GMH @ UK.AC.CAM.ASTRONOMY.STARLINK or GUYH@UK.AC.SUSSEX.CLUSTER
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OUTBURST OF RZ SAGITTAE (Q1990/52)
Gary Poyner, Birmingham, reports an outburst of this UG star located
at: RA 20h01m02s DEC +16 54.3' (1950). On 1990 June 7.05UT it was
estimated at 13.0v in good conditions. TA records show a maximum of
12.8 was reported for 1989 Oct 1.
 
POSSIBLE FADE OF SAOC 142203 (Q1990/51)
George Alcock, Yaxley, Peterborough, reports that SAOC 142203 located
at: RA 18h15m25s DEC -08 39'14"(1950) was noted near magnitude 9
during a nova patrol on 1990 June 4 at 22.40UT using 15x80B. The
star is plotted at mag 7 on various atlases and the SAOC has 7.2,
spectral class KO. The star is also HD 168014 and BD -8 4583. In the
CSI the V magnitude is given as 7.7. The star is not catalogued as
a variable in the GCVS, NSV or Name Lists 67-69.
In response to this alert, G.Hurst observed the star in poor
conditions on 1990 June 4 at 23.25UT and estimated it at about 8.3
(15x80B) but the uncertainty was +/-0.5. Apart from inferior
conditions and low altitude, use of comparisons on AAVSO Atlas for
R Sct and S Sct showed inconsistencies between the two sequences.
Mike Collins advises that the star is not a known spectroscopic
binary. N.James reports that the star was recorded at about 8.0
on a patrol photo of 1990 May 23 but earlier negatives do not
show any significant change. Estimates on the evening of June 6/7
by N.James and M.Mobberley place it 7.7-8.0 with moonlight a
problem. Further estimates or earlier photographic analysis are
urgently needed.
 
Guy M Hurst