Proxima Centauri c

Proxima Centauri c
	Schematic: Orbits of Proxima Centauri d, Proxima Centauri b and Proxima Centauri c around Proxima Centauri
Discovery
Discovered by	Damasso et al.
Discovery site	HARPS
Discovery date	January 2020
Detection method	Radial velocity
Orbital characteristics
Semi-major axis	1.489±0.049 AU
Eccentricity	0.04±0.01
Orbital period (sidereal)	1928±20 d
Inclination	133±1
Longitude of ascending node	331±1
Longitude of periastron	−4±4
Time of periastron	2456202±21
Semi-amplitude	1.1±0.2
Star	Proxima Centauri
Physical characteristics
Mass	7±1 M🜨
Temperature	39 K (−234.2 °C; −389.5 °F)

Proxima Centauri c (also called Proxima c^[2] or Alpha Centauri Cc) is a controversial exoplanet candidate, claimed to be orbiting the red dwarf star Proxima Centauri, which is the closest star to the Sun and part of a triple star system.^[4]

^ ^a ^b Cite error: The named reference Damasso2020 was invoked but never defined (see the help page).
^ ^a ^b Cite error: The named reference Kervella2020 was invoked but never defined (see the help page).
^ ^a ^b ^c ^d ^e ^f ^g ^h Cite error: The named reference BenedictMcArthur2020 was invoked but never defined (see the help page).
^ Cite error: The named reference Artigau2022 was invoked but never defined (see the help page).

[Damasso2020-1] Cite error: The named reference Damasso2020 was invoked but never defined (see the help page).

[Kervella2020-2] Cite error: The named reference Kervella2020 was invoked but never defined (see the help page).

[BenedictMcArthur2020-3] ^ ^a ^b ^c ^d ^e ^f ^g ^h Cite error: The named reference BenedictMcArthur2020 was invoked but never defined (see the help page).

[Artigau2022-4] Cite error: The named reference Artigau2022 was invoked but never defined (see the help page).

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Discovery^[1]
Schematic: Orbits of Proxima Centauri d, Proxima Centauri b and Proxima Centauri c around Proxima Centauri
Discovered by	Damasso et al.
Discovery site	HARPS
Discovery date	January 2020
Detection method	Radial velocity
Orbital characteristics
Semi-major axis	1.489±0.049 AU^[2]
Eccentricity	0.04±0.01^[3]
Orbital period (sidereal)	1928±20 d^[3]
Inclination	133±1^[3]
Longitude of ascending node	331±1^[3]
Longitude of periastron	−4±4^[3]
Time of periastron	2456202±21^[3]
Semi-amplitude	1.1±0.2^[3]
Star	Proxima Centauri
Physical characteristics
Mass	7±1 `M`_🜨^[3]
Temperature	39 K (−234.2 °C; −389.5 °F)^[1]