Electronic Telegram No. 4073 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@eps.harvard.edu (alternate cbat@iau.org) URL http://www.cbat.eps.harvard.edu/index.html Prepared using the Tamkin Foundation Computer Network COMET C/2015 D1 (SOHO) M. Masek, Institute of Physics, Academy of Sciences, Prague; J. Jurysek, Charles University, Prague; J. Cerny, Czech Astronomical Society; and M. Jelinek, R. Cunniffe, and A. J. Castro-Tirado, Institute for Astrophysics of Andalucia, Granada, report that comet C/2015 D1 (cf. CBET 4067) is visible as a cigar-shaped object with no bright condensation at all at the expected position on nineteen 30-s stacked CCD images obtained on Feb. 27.800-27.814 UT using the 0.15-m f/2.8 refractor at the BOOTES-1 astronomical station at El Arenosillo, Spain. The size of the elongated dust cloud is about 31' x 5' toward position angle 82 degrees (spanning p.a. 77 -93 degrees). The estimated total V magnitude is 8.0 +/- 0.3. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2015 CBAT 2015 March 2 (CBET 4073) Daniel W. E. Green