GJ 3929 b

GJ 3929 b
Discovery[1]
Discovered byKemmer et al.[2]
Discovery date2022
Transit
Designations
Gliese 3929 b, TOI 2013 b, G 180-18 b[3]
Orbital characteristics[4]
0.0252±0.0005 AU
Eccentricity0 (fixed)
2.616 d
Inclination88.442°±0.008°
StarGJ 3929
Physical characteristics[4]
1.09±0.04 R🜨
Mass1.75+0.44
−0.45 M🜨
Mean density
7.3±2.0 g/cm3
Temperature568±6 K (295 °C)

GJ 3929 b (Gliese 3929 b, TOI-2013 b) is a confirmed exoplanet located 52 light-years away orbiting the red dwarf star GJ 3929.[3] It is an Earth-sized planet, having a radius only 9% larger than that of Earth.[4] It orbits its star at a distance of 0.0252 astronomical units (3,770,000 km), being located in the Venus zone of its star, and completes one orbit around it every 2 days and 15 hours.[4] Because of the proximity of its star, and its low mass, GJ 3929 b is classified as a Venus-like planet, having an equilibrium temperature of around 300 °C and receiving planetary insolation 17 times more intense than Earth receives from the Sun.[4]

  1. ^ Cite error: The named reference :4 was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference :3 was invoked but never defined (see the help page).
  3. ^ a b "★ Gliese 3929". Stellar Catalog. Retrieved 2024-01-01.
  4. ^ a b c d e Beard, Corey; Robertson, Paul; Kanodia, Shubham; Lubin, Jack; Cañas, Caleb I.; Gupta, Arvind F.; Holcomb, Rae; Jones, Sinclaire; Libby-Roberts, Jessica E.; Lin, Andrea S. J.; Mahadevan, Suvrath; Stefánsson, Guðmundur; Bender, Chad F.; Blake, Cullen H.; Cochran, William D. (2022-09-01). "GJ 3929: High Precision Photometric and Doppler Characterization of an Exo-Venus and its Hot, Mini-Neptune-mass Companion". The Astrophysical Journal. 936 (1): 55. arXiv:2207.10672. Bibcode:2022ApJ...936...55B. doi:10.3847/1538-4357/ac8480. ISSN 0004-637X.