------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 2923 2013 Jun 21 10.58UT Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke, Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074 INTERNET: GUY@TAHQ.DEMON.CO.UK Backup: gmh@wdcc1.bnsc.rl.ac.uk WORLD WIDE WEB http://www.theastronomer.org ------------------------------------------------------------------- V841 OPHIUCHI This nova was discovered in outburst in 1848 by J R Hind and maximum brightness was observed as 4.3. It is located at: RA 16 59 30.37, DEC -12 53 27.2 (J2000) Rob Kaufman, Victoria, Australia relays some recent reports suggest it may be several magnitudes brighter than its usual quiescent state. Peter Nelson reports via VSNET, confirmation that it was bright on 2013 June 10 when it was recorded at V=13.49. Further observations would be welcomed and should be sent to Gary Poyner, TA VS sub-editor with a copy to the main editor. Charts with sequence can be obtained via the AAVSO home page. SUPERNOVA 2013bt IN PGC 51271 (CATALINA REALTIME TRANSIENT SURVEY) 2013bt Apr 18.39 14 21 15.13 +61 34 15.9 18.0 28.7"W 29.4"S L. Tomasella: spectrum Apr 19 type=Ia about one week before maximum SUPERNOVA 2013bu IN NGC 7331 (KOICHI ITAGAKI) 2013bu Apr 21.73 22 37 02.24 +34 24 03.0 16.6 25 "W 52 "S Y. Moritani: spectrum Apr 22 suggesting early type-II supernova. SUPERNOVA 2013bv (THU-NAOC TRANSIENT SURVEY) 2013bv Apr 9.51 08 41 21.28 +52 43 30.3 18.7 3.2"W 5.8"N J. M. Silverman: spectrum Apr 15 type-Ic within a few days of maximum.It is similar to SN 1998bw, a type often associated with earlier GRBs so a search of earlier images of this area would be worthwhile. SUPERNOVA 2013bw IN UGC 5886 (CATALINA REALTIME TRANSIENT SURVEY) 2013bw Apr 14.24 10 46 52.37 -01 23 26.9 18.4 13.3"E 2.1"N N. Morrell: spectrum Apr 16 young type-II supernova. SUPERNOVA 2013bx (THU-NAOC TRANSIENT SURVEY) 2013bx Apr 9.73 12 47 24.22 +32 32 50.0 19.8 2.7"W 3.0"S J. M. Silverman: spectrum Apr 15 type-Ia near maximum SUPERNOVA 2013by IN ESO 138-G10 (STUART PARKER) 2013by Apr 23.54 16 59 02.43 -60 11 41.8 13.5R 3 "W 76 "N N. Morrell: spectrum Apr 24 type-II shortly after explosion SUPERNOVA 2013bz (CATALINA SKY SURVEY) 2013bz Apr 21.28 13 26 51.32 -10 01 32.2 15.7 7.5"E 5.8"S T.-W Chen: spectrum Apr 30 with 4.2-m William Herschel Telescope suggests type-Ia around maximum. SUPERNOVA 2013ca IN PGC 37698 (THU-NAOC TRANSIENT SURVEY) 2013ca May 1.54 11 58 43.25 +19 08 56.2 18.1 4.3"E 7.0"S J. M. Silverman: spectrum May 4 type-II a couple of days after maximum Guy M Hurst