Lacaille 9352 c

Lacaille 9352 c or GJ 887 c is an exoplanet announced in 2020 and located 10.74 light years away, in the constellation of Piscis Austrinus.^[3]

Lacaille 9352 c

Discovery[1]
Discovered by	Tuomi et al.
Discovery date	June 2019
Detection method	Radial velocity
Designations
Alternative names	Gliese 887 c
Orbital characteristics
Semi-major axis	0.120±0.004 AU[2]
Eccentricity	0.03+0.21 −0.03[1]
Orbital period (sidereal)	21.789+0.004 −0.005 d[2]
Semi-amplitude	2.8±0.4[2]
Star	Lacaille 9352
Physical characteristics
Mass	≥7.6±1.2 M🜨[2]
Temperature	352 K (79 °C; 174 °F)[2]

It was detected using the radial velocity method from observations with HARPS in Chile and HIRES in Hawaii.^[2]

Characteristics

Lacaille 9352 c is considered a Super-Earth with a minimum mass of 7.6 Earth masses.^[4]

With an orbital period of 21.8 days, the exoplanet is located at 0.12 AU from the star, which is close to the inner edge of the habitable zone (but still outside).^[5]

The exoplanet has a calculated equilibrium temperature of 352 K (79 °C; 174 °F).^[2]

Host star

Main article: Lacaille 9352

The planet orbits the red dwarf star Lacaille 9352, which has an age of 4.57 billion years.^[6]