WASP-12 [SEP] time of discovery
WASP-12
WASP-12 is a magnitude 11 yellow dwarf star located approximately 1300 light-years away in the constellation Auriga. WASP-12 has a mass and radius similar to the Sun. Its planet WASP-12b has a retrograde orbit around WASP-12. Two red dwarf companions have been detected around WASP-12. Both have spectral types of M3V and are only 38% and 37% as massive as the Sun, respectively.
Planetary system.
In 2008, the extrasolar planet WASP-12b was discovered orbiting WASP-12 by the transit method. Its high carbon-
a mean distance of 0.0142 AU every 0.813475 days (19.5234 hours); this orbital period, at the time of WASP-43b's discovery, was the second-shortest orbit yet detected, surpassed only by WASP-19b. In addition, WASP-43b had the closest orbit to its host star (among Hot Jupiters) at the time of its discovery, comparable only to the Super-Earth planet GJ 1214b and to the planetary candidate orbiting KOI-961. While Hot Jupiters are known to have small orbital periods, planets with "exceptionally" small periods