V1974 Cygni

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Double star
V1974 Cygni
Image from the 1994 Hubble Space Telescope of the expanding gas envelope around V1974 Cygni
Image from the 1994 Hubble Space Telescope of the expanding gas envelope around V1974 Cygni
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation swan
Right ascension 20 h 30 m 31.66 s
declination + 52 ° 37 ′ 50.9 ″
Apparent brightness 17.5 likes
Typing
rel. Brightness
(J-band) 		(15.67 ± 0.07) mag
Spectral class Q
Variable star type NA + E 
Astrometry
Physical Properties
Other names
and catalog entries
2MASS catalog 2MASS J20303161 + 5237513 [1]
Other names AAVSO 2027 + 52, Downes V1974 Cyg, Nova Cyg 1992, EUVE J2030 + 52.6, RX J2030.5 + 5237

Template: Infobox Star / Maintenance / MagJ

V1974 Cygni or Nova Cygni 1992 was a relatively bright nova in the constellation Swan , which reached a brightness of 4.4  m . It was discovered by Peter Collins on February 19, 1992in Boulder (Colorado) , USA.

At this point in time it had the apparent brightness of 6 m , the maximum was calculated to be 4.4 m . The thermonuclear reaction on the surface of the white dwarf ended two years later, in 1994. It was a neon nova , and was the first nova observed from start to finish. The distance to earth could be calculated with 10,430 ly (approx. 3,200 pc ).

The Nova outbreak was also with the high-speed photometer of the HST investigated. The instrument recorded a short data set in the ultraviolet spectrum. The nova was also observed in the far ultraviolet spectrum of Voyager 2 .

See also

Web links

Individual evidence

  1. ↑ a b V * V 1974 Cyg. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed on March 29, 2019 .
  2. ↑ a b c V1974 Cyg. In: VSX. AAVSO , accessed March 28, 2019 .
  3. ↑ a b Ultraviolet photometry of Nova Cygni 1992 obtained with the high speed photometer
  4. ↑ Paolo Ulivi, David M Harland: Robotic Exploration of the Solar System Part I: The Golden Age 1957-1982 . Springer, 2007, ISBN 9780387493268 , p. 449.