HR 8799 is a roughly 30 million-year-old main-sequence star located 133.3 light-years (40.9 parsecs) away from Earth in the constellation of Pegasus....
46 KB (4,217 words) - 10:30, 13 September 2024
HR 8799 c is an extrasolar planet located approximately 129 light-years away in the constellation of Pegasus, orbiting the 6th magnitude Lambda Boötis...
11 KB (812 words) - 20:10, 26 August 2024
HR 8799 b is an extrasolar planet located approximately 129 light-years away in the constellation of Pegasus, orbiting the 6th magnitude Lambda Boötis...
11 KB (1,045 words) - 18:58, 11 August 2024
HR 8799 e is a large exoplanet, orbiting the star HR 8799, which lies 129 light-years from Earth. This gas giant is between 5 and 10 times the mass of...
10 KB (931 words) - 21:14, 17 October 2024
HR 8799 d is an extrasolar planet located approximately 129 light-years away in the constellation of Pegasus, orbiting the 6th magnitude Lambda Boötis...
8 KB (539 words) - 16:58, 29 July 2024
Janson, M.; Bergfors, C.; Goto, M.; Brandner, W.; Lafrenière, D. (2010-02-10). "SPATIALLY RESOLVED SPECTROSCOPY OF THE EXOPLANET HR 8799 c". The Astrophysical...
50 KB (2,828 words) - 14:36, 10 October 2024
This list includes the four members of the multi-planet system that orbit HR 8799. It is unlikely or at least unclear if objects on a wide orbit (≥100 AU)...
63 KB (3,794 words) - 09:59, 2 November 2024
Ji; et al. (20 November 2018). "Detecting Water in the Atmosphere of HR 8799 c with L-band High-dispersion Spectroscopy Aided by Adaptive Optics". The...
239 KB (22,304 words) - 23:30, 20 October 2024
first directly imaged planets) around HR 8799 and a 2010 paper discovering a fourth imaged planet in the system: HR 8799 e. In 1982, Zuckerman co-edited a...
7 KB (448 words) - 22:01, 14 May 2024
more massive field brown dwarfs and young L/T transition exoplanets like HR 8799 d. Jointly modeling relative astrometry of HIP 99770 b with absolute astrometry...
4 KB (390 words) - 11:38, 25 October 2024