[IAUC] CBET 957: 20070510 : (1830) POGSON
IAUC mailing list
quai en cfa.harvard.edu
Vie Jun 22 16:59:00 ART 2007
Electronic Telegram No. 957
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS en CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT en CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
(1830) POGSON
D. Higgins, Canberra, Australia; P. Pravec and P. Kusnirak, Ondrejov
Observatory; J. Oey, Leura, N.S.W., Australia; and D. Pray, Carbuncle Hill
Observatory, Greene, RI, report that photometric observations obtained
during Apr. 18 to May 9 reveal that minor planet (1830) is a binary system
with an orbital period of 24.240 +/- 0.005 hr. The primary shows a period
of 2.5702 +/- 0.0001 hr, and it has a lightcurve amplitude of 0.12 mag.
Mutual eclipse/occultation events that are 0.08- to 0.22-mag deep indicate
a lower limit on the secondary-to-primary mean-diameter ratio of 0.32.
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2007 CBAT
2007 May 10 (CBET 957) Daniel W. E. Green
Más información sobre la lista de distribución Iauc