Gliese 777 c

Last updated
Gliese 777 c
Discovery
Discovered by Marcy et al.
Discovery site United States
Discovery date24 June 2005
Doppler spectroscopy
Orbital characteristics [1]
0.1296+0.0017
−0.0018  AU
Eccentricity 0.165+0.023
−0.024
0.0468647(14) years
(17.12 days)
2,455,210.27±0.42
323.4° +9.2°
−9.1°
Star Gliese 777 A
Physical characteristics
Mass 25.4+15.6
−3.5  M🜨 [1]

    Gliese 777 c, often catalogued as Gliese 777 Ac or simply HD 190360 c, is an extrasolar planet approximately 52 light-years away in the constellation of Cygnus. The planet was discovered orbiting the primary star of the Gliese 777 system in 2005 using the radial velocity method and confirmed in 2009. [2] [3] The planet was once called the "smallest extrasolar planet discovered", but this is currently no longer the case. With a mass just 25 times that of the Earth, the planet is likely a "hot Neptune" planet, a small Jovian planet, or possibly a large terrestrial planet (a super-Earth).

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    See also

    References

    1. 1 2 Giovinazzi, Mark R.; Blake, Cullen H.; Robertson, Paul; Lin, Andrea S. J.; Gupta, Arvind F.; Mahadevan, Suvrath; Fernandes, Rachel B.; Wright, Jason T.; Daniella Bardalez Gagliuffi; Dong, Jiayin; Fitzmaurice, Evan; Halverson, Samuel; Kanodia, Shubham; Logsdon, Sarah E.; Luhn, Jacob K.; McElwain, Michael W.; Monson, Andy; Ninan, Joe P.; Rajagopal, Jayadev; Roy, Arpita; Schwab, Christian; Stefánsson, Gudmundur; Terrien, Ryan; Eastman, Jason D.; Horner, Jonathan; Plavchan, Peter; Wang, Sharon X.; Wilson, Maurice L.; Wittenmyer, Robert A. (2025). "The NEID Earth Twin Survey. II. Dynamical Masses in Seven High-acceleration Star Systems". arXiv: 2505.12563 [astro-ph.EP].
    2. ↑ Vogt, Steven S.; et al. (2005). "Five New Multicomponent Planetary Systems" (PDF). The Astrophysical Journal. 632 (1): 638–658. Bibcode:2005ApJ...632..638V. doi:10.1086/432901. S2CID   16509245. Archived (PDF) from the original on 2018-07-22. Retrieved 2020-09-03.
    3. ↑ Wright, J. T.; et al. (2009). "Ten New and Updated Multi-planet Systems, and a Survey of Exoplanetary Systems". The Astrophysical Journal. 693 (2): 1084–1099. arXiv: 0812.1582 . Bibcode:2009ApJ...693.1084W. doi:10.1088/0004-637X/693/2/1084. S2CID   18169921.


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