Central Bureau for Astronomical Telegrams
IAUC 5010: 1989c1; V3890 Sgr; 1990 HA
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 5011
Circular No. 5010
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
COMET AUSTIN (1989c1)
D. J. Sahnow, P. D. Feldman, S. R. McCandliss, and M. E.
Martinez, Johns Hopkins University, report obtaining long-slit
ultraviolet spectra of comet Austin from a sounding rocket experiment
launched from White Sands Missile Range, NM, on Apr. 21.43 UT. The
wavelength range was 125-185 nm at a spectral resolution of 0.7 nm
along an 8".25 slit. Emissions of O I, C I, S I, and CO were
detected. The CO production rate derived from a radial outflow model
is 1-2 x 10E27 sE-1, indicating an abundance of CO relative to water
of about 2 percent.
V3890 SAGITTARII
B. A. Skiff, Lowell Observatory, reports the following position
that is a mean of measurements from two plates taken 1990 May 9.4 UT
with the 0.33-m Lowell astrograph: R.A. = 18h27m39s.976, Decl. =
-24 03'18.23 (equinox 1950.0; standard deviations +/- 0".64 in R.A.,
+/- 0".52 in Decl.).
W. Liller, Vina del Mar, Chile, reports his independent discovery
of the outburst of this object, and provides the following magnitudes
from 2415 film images: Apr. 25.39 UT, [12; 29.14, 8.8; 30.15,
8.6.
1990 HA
Improved orbital elements from MPC 16438:
T = 1990 Feb. 24.784 ET Peri. = 307.469
e = 0.66772 Node = 184.770 1950.0
q = 0.79369 AU Incl. = 3.795
a = 2.38863 AU n = 0.266981 P = 3.69 years
1990 ET R.A. (1950) Decl. Delta r V
May 9 13 44.67 - 1 04.5 0.334 1.321 16.1
19 13 51.90 - 2 47.9
29 13 59.09 - 4 18.1 0.587 1.519 17.8
June 8 14 07.03 - 5 43.3
18 14 15.85 - 7 05.7 0.887 1.711 19.0
28 14 25.59 - 8 26.2
July 8 14 36.19 - 9 44.6 1.230 1.894 20.0
1990 May 11 (5010) Daniel W. E. Green
Read IAUC 5011
Our Web policy. Index to the CBAT/MPC/ICQ pages.
