[IAUC] IAUC 8990: 2008 TC_3; QY Mus [25139-2009/08-R1]

Lun Oct 6 16:29:42 ART 2008

                                                  Circular No. 8990
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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2008 TC_3
     A small asteroidal object (absolute magnitude H = 30.4,
suggesting a few meters in size) discovered by the Mt. Lemmon
Survey (observer R. A. Kowalski) on Oct. 6.28 UT at Delta = 0.0033
AU (about 1.27 the moon's distance from the earth) will enter the
earth's atmosphere over northern Sudan (according to S. Chesley,
Jet Propulsion Laboratory) around Oct. 7.115, moving east to west.
Prior to entering the atmosphere, it may be around visual mag 11.
Astrometry, orbital elements, and ephemerides are given on MPECs
2008-T50, 2008-T51, and 2008-T52.


QY MUSCAE
     W. Liller, Vina del Mar, Chile, reports his discovery of an
apparent nova (mag approximately 8.6) on a pair of Technical Pan
photographs taken on Sept. 28.998 UT with a 85-mm camera lens (+
orange filter).  The new object is located at R.A. = 13h16m30s,
Decl. = -67o37'.0 (equinox 2000.0); additional magnitudes from
Liller:  Sept. 15.023, [11.5; Oct. 4.032, 8.9.  Liller adds that a
weak spectrogram taken on Oct. 4.015 with a Schmidt camera of focal
length 300 mm (+ orange filter + Technical Pan film + 100-mm x 100-
mm transmission grating with 75 grooves/mm) shows a single broad
emission line at the expected position of H_alpha (width at least
approximately 230 nm).  V. Tabur, Wanniassa, Australian Capital
Territory, reports that his unfiltered CCD images, taken with an
intentionally significantly defocused Nikon ED 77-mm-aperture f/2.8
camera lens (+ SBIG ST8XE CCD camera) yields the following position
(estimated uncertainty +/- 4") for the apparent nova:  R.A. =
13h16m36s.22, Decl. = -67o36'50".7; while the variable is involved
with a nearby star due to the defocused images, he provides the
following magnitudes for the apparent nova:  Sept. 19.418, [11.6;
21.378, 9.9; 23.401, 9.8; 24.378, 9.7; 25.378, 9.2; 27.389, 8.7;
28.383, 8.6; 29.436, 8.5 (cloud interfering); 30.397, 8.1; Oct.
1.395, 8.3.  P. Williams, Heathcote, N.S.W., reports visual mag 8.9
on Oct. 2.440.  M. Templeton, AAVSO, forwards the following
position end figures and magnitudes from P. Nelson, Ellinbank,
Victoria, Australia:  46s.44, 47".8; B = 10.26, V = 9.31, at Oct.
2.44.  B. A. Skiff, Lowell Observatory, reports that a USNO-B1.0-
catalogue star of blue mag 19.9 and red mag 17.5 has position end
figures 36s.47, 47".9, noting that a star is also present with 0".5
of Nelson's position on a plate taken via the U.K. Schmidt
Telescope H_alpha survey.  E. Kazarovets reports that the GCVS
team assigns the designation QY Mus to this object.

                      (C) Copyright 2008 CBAT
2008 October 6                 (8990)            Daniel W. E. Green