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-----Original Message-----
From: owner-kuuplan-l_at_ursa.fi [mailto:owner-kuuplan-l_at_ursa.fi]On Behalf
Of Matti Suhonen
Sent: 8. maaliskuuta 2007 22:59
To: kuuplan-l_at_ursa.fi
Subject: [kuuplan-l] Suomalainen Supernova: Fwd: IAUC 8814: (119979)
2002 WC_19; 2007aa, 2007ab, 2007ac, 2007ad, 2007ae [26021-2007/05-R1]
Juuri ilmestynyt Tähdet ja avaruus -lehti kertoo Härkämäellä löydetystä
uudesta
supernovasta. Oheisena siitä kertova IAU:n sirkulaari.
Onnittelut Veli-Pekka Hentuselle ja Markku Nissiselle!
Terveisin
Matti Suhonen
Circular No. 8814
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138,
U.S.A.
IAUSUBS_at_CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT_at_CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)
(119979) 2002 WC_19
K. S. Noll, Space Telescope Science Institute (STScI); W. M.
Grundy, Lowell Observatory; S. D. Kern, STScI; H. F. Levison,
Southwest Research Institute; and D. C. Stephens, Brigham Young
University, report the detection of a binary companion to the
transneptunian object (119979) 2002 WC_19 (cf. MPECs 2003-A25,
2003-V38), which is in a 1:2 resonance with Neptune. The
observations were made during 2006 Nov. 5.960-5.985 UT with the
High Resolution Camera of the Advanced Camera for Surveys on the
Hubble Space Telescope, using the clear filters with one 300-s
exposure at each of four dithered positions on the detector. The
two components were separated by an angular distance of 0".090 +/-
0".008 and differ in brightness by 2.5 magnitudes. The fainter
component lies at a position angle of 233 +/- 6 deg from the
primary. The projected separation of the objects in the sky plane
is 2760 +/- 250 km.
SUPERNOVAE 2007aa, 2007ab, 2007ac, 2007ad, 2007ae
Five apparent supernovae have been discovered on CCD frames
(unfiltered unless otherwise noted below) and reported to the
Central Bureau: 2007aa by Takao Doi of Seabrook, TX, U.S.A.
(0.40-m f/10 Cassegrain reflector at Weimar, TX); 2007ab by L. A.
G. Monard (cf. IAUC 8813); 2005ac and 2007ad by T. Puckett and P.
Gray (cf. IAUC 8804); and 2007ae by Markku Nissinen and Veli-Pekka
Hentunen (Varkaus, Finland; Meade LX200 telescope + Bessel R
filter). Discovery observations:
SN 2007 UT R.A. (2000.0) Decl. Mag. Offset
2007aa Feb. 18.308 12 00 27.69 - 1 04 51.6 15.7 60" E, 68" N
2007ab Feb. 19.104 16 51 29.13 - 3 05 33.6 17.8 47" W, 15" N
2007ac Feb. 19.44 16 47 02.36 +40 08 47.6 17.5 2".0 W, 8".7 N
2007ad Feb. 19.47 17 24 24.58 +44 56 15.9 17.4 4".9 E, 10".7 S
2007ae Feb. 19.892 17 01 51.95 +79 01 54.6 17.5 8" E, 21" S
Additional information is available on these objects on the
following Electronic Telegrams: 2007aa in NGC 4030, CBET 848 and
850 (type-II, discovered about 19 days past explosion); 2007ab in
MCG -01-43-2, CBETs 851 and 853 (type-II, discovered about 2 weeks
past explosion); 2007ac in UGC 10550, CBETs 854 and 859 (type-II,
discovered about a week past explosion); 2007ad in UGC 10845, CBETs
854 and 857 (type-II, discovered within a few days of explosion);
2007ae in UGC 10704, CBETs 856 and 859 (type-Ia, discovered just
before maximum).
(C) Copyright 2007 CBAT
2007 February 27 (8814) Daniel W. E. Green
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