Gliese 414 Ab

Gliese 414 Ab
Artistic representation of a sub-Neptune exoplanet.
Discovery
Discovered byDedrick et al.
Discovery date2020[1]
Radial velocity[1][2]
Designations
HD 97101 Ab, HIP 54646 b,[3] LHS 2367 b, G 119-60 b, TIC 9001920 b, WISEA J111105.67+302643.6 b[4]
Orbital characteristics
Periastron0.13 AU
Apoastron0.34 AU
0.24±0.01 AU[5]
Eccentricity0.45+0.19
−0.22
[5]
50.817+0.031
−0.03
 d
[5]
111°+36°
−52°
[5]
StarGliese 414 A
Physical characteristics
2.95+1.11
−0.91
 R🜨
[5]
Mass>7.6+2.44
−2.19
 M🜨
[5]
Temperature308.6±33.5 K (35.5 °C (95.9 °F))[5][a]

Gliese 414 Ab, also known as GJ 414 Ab, is a sub-Neptune exoplanet orbiting Gliese 414 A, an orange dwarf located 39 light-years from Earth, in the constellation Ursa Major.[4][note 1] It is at least 7.6 times more massive than the Earth and is 3 times larger, having a diameter of 37600 km.[5] It orbits its host star at a distance of 0.24 astronomical units (36,000,000 km), completing one revolution every 51 days.[5] The distance of Gliese 414 A b from its star makes it to be located in the inner part of the optmistic habitable zone, and the planet has a equilibrium temperature of 35.5 °C.[5]

  1. ^ a b Martin, Pierre-Yves (2020). "Planet Gliese 414 Ab". Extrasolar Planets Encyclopaedia. Archived from the original on 2023-12-14. Retrieved 2023-12-14.
  2. ^ Cite error: The named reference :3 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference :2 was invoked but never defined (see the help page).
  4. ^ a b "⬤ Exoplanet Gliese 414 A b". Stellar Catalog. Archived from the original on 2024-01-13. Retrieved 2024-01-13.
  5. ^ a b c d e f g h i j Dedrick, Cayla M.; Fulton, Benjamin J.; Knutson, Heather A.; Howard, Andrew W.; Beatty, Thomas G.; Cargile, Phillip A.; Gaudi, B. Scott; Hirsch, Lea A.; Kuhn, Rudolf B.; Lund, Michael B.; James, David J.; Kosiarek, Molly R.; Pepper, Joshua; Petigura, Erik A.; Rodriguez, Joseph E. (2021-02-01). "Two Planets Straddling the Habitable Zone of The Nearby K Dwarf Gl 414A". The Astronomical Journal. 161 (2): 86. arXiv:2009.06503. Bibcode:2021AJ....161...86D. doi:10.3847/1538-3881/abd0ef. ISSN 0004-6256.
  6. ^ "HD 97101". simbad.cds.unistra.fr. Retrieved 2024-01-13.


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