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Kirjoittajan mukaan: Veikko Makela (veikko.makela_at_hidden_email_address.net)
Päiväyksen mukaan: 08.03.2007



-----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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