DN Geminorum
Encyclopedia
DN Geminorum or Nova Geminorum 1912 was a nova
which lit up in 1912 in the constellation
Gemini
. It reached a brightness of 3.5 mag
. Its brightness decreased in 36 days by 3 mag. Today its brightness is 14 mag.
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 lit up in 1912 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....
Gemini
Gemini (constellation)
Gemini is one of the constellations of the zodiac. It was one of the 48 constellations described by the 2nd century astronomer Ptolemy and it remains one of the 88 modern constellations today. Its name is Latin for "twins", and it is associated with the twins Castor and Pollux in Greek mythology...
. It reached a brightness of 3.5 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...
. Its brightness decreased in 36 days by 3 mag. Today its brightness is 14 mag.
External links
- http://www.tsm.toyama.toyama.jp/curators/aroom/var/nova/1910.htm