Discovery | |
---|---|
Discovered by | Marcy et al. |
Discovery site | California, USA |
Discovery date | June 13, 2002 |
Radial velocity | |
Orbital characteristics | |
Apastron | 0.260 AU (38,900,000 km) |
Periastron | 0.219 AU (32,800,000 km) |
0.240 ± 0.00005 AU (35,903,500 ± 7,500 km)[1] | |
Eccentricity | 0.086 ± 0.052[1] |
44.3446 ± 0.007[1] d 0.121407 y | |
2,449,989.3385 ± 3.3[1] | |
77.9 ± 29[1] | |
Semi-amplitude | 10.18 ± 0.43[1] |
Star | 55 Cancri A |
55 Cancri c (abbreviated 55 Cnc c), formally named Brahe (pronounced /ˈbrɑːhiː/ or /ˈbrɑː/), is an extrasolar planet in an eccentric orbit around the Sun-like star 55 Cancri A, making one revolution every 44.34 days. It is the third known planet in order of distance from its star. 55 Cancri c was discovered on June 13, 2002, and has a mass roughly half of Saturn.
In July 2014 the International Astronomical Union launched NameExoWorlds, a process for giving proper names to certain exoplanets and their host stars.[2] The process involved public nomination and voting for the new names.[3] In December 2015, the IAU announced the winning name was Brahe for this planet.[4] The winning name was submitted by the Royal Netherlands Association for Meteorology and Astronomy of the Netherlands. It honors the astronomer Tycho Brahe.[5]