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....
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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 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 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
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)...
64 KB (3,828 words) - 17:04, 7 November 2024
most recent is the discovery of the complex extrasolar planets system HR 8799. HR 8799 is the first direct observation of an exoplanet in history. The Canadian...
242 KB (23,479 words) - 11:50, 15 November 2024
and Gemini Observatory. Three planets were directly observed orbiting HR 8799, whose masses are approximately ten, ten, and seven times that of Jupiter...
135 KB (15,368 words) - 01:39, 5 November 2024
exoplanet-hosting stars, including the first discovered by direct imaging (HR 8799), are known to also host debris disks. The nearby star 55 Cancri, a system...
27 KB (2,357 words) - 19:16, 17 July 2024
Lafrenière, D. (2010-02-10). "SPATIALLY RESOLVED SPECTROSCOPY OF THE EXOPLANET HR 8799 c". The Astrophysical Journal. 710 (1): L35–L38. arXiv:1001.2017. Bibcode:2010ApJ...
51 KB (2,870 words) - 02:16, 4 November 2024