------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 2961 2013 Nov 14 16.52UT 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 ------------------------------------------------------------------- COMET C/2012 S1 (ISON) Mark Kidger: Large photometric outburst of Comet C/2012 S1 (ISON) and intense observation of C/2012 S1 (ISON) by the Observadores_cometas group has shown a sudden increase in activity since 2013 November 5. Sample R magnitudes in a 30 arcsecond aperture (calibrated against CMC-14) are: 2013 Nov 05.88, 10.98, Gustavo Muler (MPC J47, Lanzarote) 07.25, 10.77, Faustino García (MPC J38, Asturias) 09.24, 10.56, JuanJo Gonzalez (MPC J01, Asturias) 11.22, 9.73, Francisco Soldan (MPC Z74, Seville) 12.19, 9.70, Fernando Limon (MPC I99, Argentina) 13.27, 8.94, Francisco Hernandez (MPC J24, Tenerife) 14.24, 7.27, JuanJo Gonzalez However, the radial profile of the coma brightness shows that the inner coma has become steadily more diffuse over the last two months and continues to be more diffuse than the ideal 1/r profile. Despite the intense outburst there has, to date, been no obvious development of a star-like, or near star-like central condensation, unlike in outbursts such as 17P/Holmes, 29P/Schwassmann/Wachmann, or C/2012 X1 (LINEAR). V1830 AQUILAE = NOVA AQUILAE 2013 = PNV J19023335+0315190 This object was announced as Nova Aquilae 2013 on TA E-Circular 2960. Dan Green reports that IAUC 9263 gave the incorrect GCVS designation for this nova (first announced on CBET 3691), due to an error in the email from N. N. Samus to the Central Bureau. The last sentence of the item on IAUC 9263 has been amended to read: "N. N. Samus writes that this nova has been given the permanent GCVS designation V1830 Aql." Guy M Hurst