GJ 1002 b

Last updated
GJ 1002 b
Discovery [1]
Discovery dateDecember 2022
Radial velocity
Orbital characteristics [1]
0.0457±0.0013  AU
10.3465±0.027  d
Semi-amplitude 1.31±0.14  m/s
Star GJ 1002
Physical characteristics [1]
Mass ≥1.08±0.13  M🜨
Temperature Teq: 230.9 ± 6.7  K (−42.25 ± 6.70  °C; −44.05 ± 12.06  °F)

    GJ 1002 b (also designated as Gliese 1002 b) is a potentially habitable exoplanet located 16 light-years away, in the constellation of Cetus. [1] The planet, which has an Earth Similarity Index of 86%, is in the habitable zone of its parent star. [2] GJ 1002 b has a minimum mass of 1.08 Earth masses and is estimated by the Planetary Habitability Laboratory to have 1.03 times the radius of Earth and a surface temperature of 261 Kelvin. [3]

    Contents

    Detection

    GJ 1002 b was detected in 2022 via the radial velocity method, which was used to measure the planet's minimum mass. [1]

    Host star

    The host star, GJ 1002, is a quiet M5.5V type red dwarf not believed to release flares that could harm the atmosphere. [4] The planet orbits its host star at a distance of 0.0457 AU (Astronomical units), with a 10.3 day orbital period and a 0.0 eccentricity. [5] [6]

    See also

    References

    1. 1 2 3 4 5 Suárez Mascareño, A.; González-Alvarez, E.; et al. (December 2022). "Two temperate Earth-mass planets orbiting the nearby star GJ 1002". Astronomy & Astrophysics . 670: A5. arXiv: 2212.07332 . Bibcode:2023A&A...670A...5S. doi:10.1051/0004-6361/202244991. S2CID   254353639.
    2. ↑ "EarthSky | 2 possibly Earth-like worlds, just 16 light-years away". earthsky.org. 2022-12-29. Retrieved 2023-01-08.
    3. ↑ "PHL @ UPR Arecibo - Earth Similarity Index (ESI)". phl.upr.edu. Retrieved 2023-01-08.
    4. ↑ Nowakowski, Tomasz; Phys.org. "Two Earth-mass exoplanets orbiting nearby star discovered". phys.org. Retrieved 2023-01-08.
    5. ↑ "Exoplanet-catalog". Exoplanet Exploration: Planets Beyond our Solar System. Retrieved 2023-08-28.
    6. ↑ "The Extrasolar Planet Encyclopaedia — GJ 1002 b". Extrasolar Planets Encyclopaedia . Retrieved 2023-08-28.


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