V476 Cygni
Encyclopedia
V476 Cygni or Nova Cygni 1920 was a nova
which occurred in the constellation
Cygnus
in 1920. It reached a brightness of 2.0 mag
. Nowadays its brightness is 17.09 mag.
Coordinates (J2000):
Nova
A nova is a cataclysmic nuclear explosion in a star caused by the accretion of hydrogen on to the surface of a white dwarf star, which ignites and starts nuclear fusion in a runaway manner...
which occurred in the constellation
Constellation
In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....
Cygnus
Cygnus (constellation)
Cygnus is a northern constellation lying on the plane of the Milky Way. Its name is the Latinized Hellenic word for swan. One of the most recognizable constellations of the northern summer and autumn, it features a prominent asterism known as the Northern Cross...
in 1920. It reached a brightness of 2.0 mag
Apparent magnitude
The apparent magnitude of a celestial body is a measure of its brightness as seen by an observer on Earth, adjusted to the value it would have in the absence of the atmosphere...
. Nowadays its brightness is 17.09 mag.
Coordinates (J2000):
- Right ascensionRight ascensionRight ascension is the astronomical term for one of the two coordinates of a point on the celestial sphere when using the equatorial coordinate system. The other coordinate is the declination.-Explanation:...
: 19h 58m 24,6s - DeclinationDeclinationIn astronomy, declination is one of the two coordinates of the equatorial coordinate system, the other being either right ascension or hour angle. Declination in astronomy is comparable to geographic latitude, but projected onto the celestial sphere. Declination is measured in degrees north and...
: +53° 37’ 07"
External links
- http://www.aqua.co.za/assa_jhb/Canopus/Can2003/c038LitU.htm
- http://www.otticademaria.it/astro/Costellazioni/st_cyg.html
- http://www.iop.org/EJ/article/1538-3881/120/4/2007/200096.html