 The planet 55 Cnc c (min mass ~0.17 MJ) in MPL3D | |
| 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]
- ^ a b c d e f Fischer, D.A.; et al. (March 2008). "Five Planets Orbiting 55 Cancri". Astrophysical Journal. 675 (675): 790–801. arXiv:0712.3917. Bibcode:2008ApJ...675..790F. doi:10.1086/525512. S2CID 17083836.
- ^ NameExoWorlds: An IAU Worldwide Contest to Name Exoplanets and their Host Stars. IAU.org. 9 July 2014
- ^ "NameExoWorlds The Process". Archived from the original on 2015-08-15. Retrieved 2015-09-05.
- ^ Final Results of NameExoWorlds Public Vote Released, International Astronomical Union, 15 December 2015.
- ^ "NameExoWorlds The Approved Names". Archived from the original on 2018-02-01. Retrieved 2015-12-27.