THE ASTRONOMER Electronic Circular No 646      1992 June 16 19.08UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise,  Basingstoke,
Hants, RG22 4PP,England. Telephone/FAX(0256)471074 Int:+44256471074
Telex: 9312111261 Answerback: TA G                     JANET BOXES:
GMH at UK.AC.CAM.ASTRONOMY.STARLINK or GUYH at UK.AC.SUSSEX.CLUSTER
TELECOM GOLD: 10074:MIK2885                       PRESTEL 256471074
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EUVE LAUNCHES SUCCESSFULLY
The Extreme Ultraviolet Explorer satellite was successfully
launched from Launch Complex 17A at Cape Canaveral Air Force
Station, Florida, at 12:40 pm EDT (16:40 GMT) on Sunday, June 7,
1992. All systems were green and go at the start of the launch
window at 12:24 EDT, but there was a slight hold due to an
aircraft in the launch range. The spacecraft orbit has been
described as "perfect," with variation from the nominal altitude
of approximately 2/10 of a nautical mile.
The MAPS high-gain antenna was deployed, and the EUVE Science
Operations Center at UC Berkeley is receiving good telemetry via
TDRSS.
The spacecraft has spent time in inertial mode with stars in both
star trackers. It has also spent some time spinning at 1.3 RPO
for star acquisition purposes.
The Flight Operations Team has successfully converged aspect, and
experiments with controlled slewing are underway.
EUVE Electronic Newsletter Vol 1 No 14

NOVA SCORPII 1992
This object has undergone a noticeable brightening, as indicated by
the following photometry:  June 8.70 UT, V = 8.36, B-V = +1.05, U-B
= +0.09 (W. H. Allen, Carter Observatory, observing as noted on
IAUC 5536); June 10.44, 7.93, +1.10, +0.07 (Allen); June 10.488,
7.86 +/- 0.01, +1.05 +/- 0.01, +0.03 +/- 0.04, V-R = +0.76 +/-
0.01, V-I = +1.57 +/- 0.05 (P. M. Kilmartin, Mount John University
Observatory).
IAUC 5542
Additional visual estimates reported by Paul Camilleri, Australia:
1992 May 29.38UT, 8.4; 30.37, 8.8; June 2.38, 9.0; 4.38, 9.0;
5.38, 9.4.

Guy M Hurst