[IAUC] CBET 4070: 20150228 : COMET C/2015 D3 (PANSTARRS)
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Vie Feb 27 18:41:03 ART 2015
Electronic Telegram No. 4070
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director: Daniel W. E. Green; Hoffman Lab 209; Harvard University;
20 Oxford St.; Cambridge, MA 02138; U.S.A.
e-mail: cbatiau en eps.harvard.edu (alternate cbat en iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network
COMET C/2015 D3 (PANSTARRS)
R. Weryk and R. Wainscoat, Institute for Astronomy, University of Hawaii,
report the discovery of another apparent comet in four w-band exposures taken
with the 1.8-m Pan-STARRS1 telescope at Haleakala on Feb. 20.5 UT (discovery
observations tabulated below); the object shows a broad tail extending for
approximately 40" towards position angle approximately 30 degrees.
2015 UT R.A. (2000) Decl. Mag.
Feb. 19.49014 11 07 23.82 -15 31 12.9 20.4
20.47078 11 06 51.38 -15 25 56.6 20.0
20.48200 11 06 51.00 -15 25 52.9 19.9
20.49326 11 06 50.62 -15 25 49.3 20.0
20.50451 11 06 50.24 -15 25 45.7 20.0
After the comet was posted on the Minor Planet Center's PCCP webpage H. Sato,
Tokyo, Japan, reported that twelve stacked 60-s exposures taken with an
iTelescope 0.51-m f/6.8 astrograph (+ luminance filter) near Mayhill, NM, USA,
on Feb. 21.26 UT show a strongly condensed coma 10" in diameter (magnitude
18.2 as measured within a circular aperture of radius 6".5) with a narrow tail
20" long toward p.a. 145 degrees.
The available astrometry, the following preliminary parabolic orbital
elements by G. V. Williams, and an ephemeris appear on MPEC 2015-D112.
T = 2016 June 10.1416 TT Peri. = 5.6245
Node = 157.1038 2000.0
q = 8.035665 AU Incl. = 128.2768
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2015 CBAT
2015 February 28 (CBET 4070) Daniel W. E. Green
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