Central Bureau for Astronomical Telegrams
IAUC 5561: N Sgr 1992 No. 2; 1992l; N Sco 1992
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 5562
Circular No. 5561
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@CFA or GREEN@CFA (.SPAN, .BITNET or .HARVARD.EDU)
NOVA SAGITTARII 1992 No. 2
William Liller, Vina del Mar, Chile, reports his discovery
with Problicom on technical pan film (+ orange filter) of a nova at
R.A. = 18h20m18s, Decl. = -28 23'.7 (equinox 1950.0). Approximate
magnitude estimates: July 6.03 UT, [12.0; 9.157, 8.5. M. Della
Valle and H. W. Duerbeck, European Southern Observatory, communicate:
"Analysis of spectrograms (range 380-900 nm, resolution
about 1 nm) obtained on July 10.2 UT with the 3.6-m telescope (+
EFOSC) at La Silla, under poor meterological conditions, shows this
to be a nova. The spectrum exhibits Balmer emissions lines flanked
by blue-shifted P-Cyg absorption, superimposed on a strong blue
continuum. H and K, the infrared triplet of Ca II, and O I (mult.
1) are also present. Iron lines are still weak. The expansion
velocity derived from the minimum of the P-Cyg absorptions, about
1000 km/s, may indicate a slow or moderately fast nova near maximum
light." E. Waagen, AAVSO, forwards the following visual magnitude
estimates: July 10.19 UT, 7.8 (P. Sventek, Houston, TX); 10.20, 8.0
(M. Adams, Melbourne, FL); 10.23, 8.2 (C. Scovil, Stamford, CT).
PERIODIC COMET GICLAS (1992l)
S. Nakano, Sumoto, Japan, reports the recovery of this comet
by T. Seki, Geisei, in very close agreement with the prediction on
MPC 14594 (ephemeris on MPC 19706). The comet is very diffuse with
central condensation. On July 9, m2 = 19.0.
1992 UT R.A. (2000) Decl. m1
June 30.77569 1 41 10.98 + 3 36 51.6 18
July 7.76111 1 55 51.12 + 4 36 17.9 18
7.77222 1 55 52.52 + 4 36 21.8
9.77604 2 00 04.42 + 4 52 38.6 18.5
9.78403 2 00 05.40 + 4 52 40.7
NOVA SCORPII 1992
Additional photometry (cf. IAUC 5555, 5558, etc.) by A. C.
Gilmore, Mt. John University Observatory, obtained in non-
photometric conditions: July 6.40 UT, V = 9.27, B-V = +0.83, U-B =
-0.17, V-R = +1.31, V-I = +1.39.
1992 July 10 (5561) Daniel W. E. Green
Read IAUC 5562
Our Web policy. Index to the CBAT/MPC/ICQ pages.
