THE ASTRONOMER Electronic Circular No 687 1992 Nov 22 11.51UT Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke, Hants, RG22 4PP,England. Telephone/FAX(0256)471074 Int:+44256471074 TELEX: 9312111261 Answerback: TA G TELECOM GOLD: 10074:MIK2885 GMH at UK.AC.RUTHERFORD.STARLINK.ASTROPHYSICS STARLINK: RLSAC::GMH GMH at UK.AC.CAM.ASTRONOMY.STARLINK STARLINK: CAVAD::GMH ------------------------------------------------------------------- V635 CAS Further to the announcement on E686, the professional astronomers in USA advise us that this source will be monitored in X-rays until the end of March 1993 concurrently with our optical coverage. In addition a group at SAO in Russia are obtaining spectral results over the same interval. We have taken the opportunity to revise the existing sequence in the light of UBV measures of two stars (now D and E) obtained by H.Mendelson (Israel). The following changes to earlier comparison star designations are included in the latest chart: 2 and 3 now dropped 4 is now E 5 is now F 6 is now G 7 is now H 8 is now J 9 is now K Observers can also consult a photograph of this field by Martin Mobberley which was published on the front cover of 'The Astronomer' for 1990 May. We would welcome suggested comparisons and magnitudes to enable to sequence to be extended to mag 16. A new e-chart follows: \\\\\\V635 Cas Optical component 4U0115+63 S,120,10,S P,01h 15.2m +63 29' (1950) -C, 1.3089, 63.7400,2000 O,60,60,13.5,16.3V -T,XNGP See TA Cover 1990 May -S,TA921121 R,12.3,86,51,D,R R,13.1,68,62,E R,13.4,77,57,F,A R,13.7,37,50,G R,14.0,72,60,H,A R,14.4,68,49,J,R R,14.9,74,55,K M,9,25,50 M,11,33,108,85,100,103,114,33,9,27,53 M,12,40,65,118,114,99,4,88,35,81,17 M,12,87,9 M,13,102,92,88,118,78,90,31,111,75,102,91,89,115,60 M,13,104,82,106,94,5,74,36,66,7,110,2,68 M,13,39,21,82,56,98,50,118,54,2,42 M,13,44,17,9,57,3,25 M,14,45,82,65,91,67,102,84,100,53,33,86,6 M,14,52,39,97,49,27,34,85,51 M,15,1,38 E,52 ////// Basic chart automatically generated by GSC2FIND ver 1.4 Guy M Hurst