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....
43 KB (3,972 words) - 12:53, 2 July 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 (1,037 words) - 03:04, 20 December 2023
HR 8799 c is an extrasolar planet located approximately 129 light-years away in the constellation of Pegasus, orbiting the 6th magnitude Lambda Boötis...
10 KB (785 words) - 16:38, 21 December 2023
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) - 03:11, 22 November 2023
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 (531 words) - 03:36, 29 November 2023
and Gemini Observatory. Three planets were directly observed orbiting HR 8799, whose masses are approximately ten, ten, and seven times that of Jupiter...
134 KB (15,194 words) - 19:55, 5 July 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...
241 KB (23,437 words) - 17:54, 11 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)...
48 KB (3,405 words) - 15:42, 12 July 2024
Lafreniere, 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...
64 KB (5,503 words) - 22:21, 16 July 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) - 13:42, 31 December 2023