J. A. Bailey, Astrometry Department, Royal Greenwich Observatory, provides the following precise position: R.A. = 19h37m08s.18, Decl. = +18o00'58".2 (equinox 1950.0); the photographic magnitude on Jan 16.70 UT was 9.0. C. Y. Shao, Center for Astrophysics, reports that the photographic magnitude was 8.8 on Jan. 13.94 UT and has measured the position from a plate taken by R. E. McCrosky at the Harvard College Observatory's Agassiz Station as (end figures only) 08s.15, 57".7; he adds that inspection of the Palomar Sky Survey prints shows that there appear to be no stars brighter than photographic magnitude ~ 19 within about 8" of the nova's position. Further visual magnitude estimates: Jan. 7.79 UT, ~ 7.0 (G. M. Hurst, Northampton, England); 14.21, 8.6 (K. Locher, Grut-Wetzikon, Switzerland); 17.08, 8.7 (J. Morgan, Prescott, Arizona).
International Astronomical Union Circular
- Pub Date:
- January 1977