• Thumbnail for HR 8799
    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
  • Thumbnail for HR 8799 e
    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
  • Thumbnail for HR 8799 b
    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
  • Thumbnail for HR 8799 c
    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
  • Thumbnail for HR 8799 d
    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
  • Thumbnail for Methods of detecting exoplanets
    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 (15,271 words) - 19:20, 30 August 2024
  • Thumbnail for List of directly imaged exoplanets
    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 (3,810 words) - 06:08, 13 September 2024
  • Thumbnail for Quebec
    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 (23,462 words) - 15:05, 8 September 2024
  • Thumbnail for Debris disk
    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...
    50 KB (2,828 words) - 00:10, 31 August 2024
  • Thumbnail for HIP 99770 b
    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) - 17:53, 1 July 2024
  • Thumbnail for ROXs 42Bb
    age of the star, similar to the masses of directly imaged planets around HR 8799 and beta Pictoris. However, it is unclear whether ROXs 42Bb formed like...
    5 KB (405 words) - 21:02, 15 July 2024
  • Thumbnail for List of largest exoplanets
    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...
    141 KB (10,383 words) - 10:34, 17 September 2024
  • Thumbnail for Pegasus (constellation)
    vapor beyond the Solar System, while extrasolar planets orbiting the star HR 8799 also in Pegasus are the first to be directly imaged. V391 Pegasi is a hot...
    37 KB (3,919 words) - 01:13, 17 July 2024
  • Thumbnail for Exoplanet
    Moon. The most massive exoplanet listed on the NASA Exoplanet Archive is HR 2562 b, about 30 times the mass of Jupiter. However, according to some definitions...
    147 KB (15,941 words) - 19:12, 9 September 2024
  • Thumbnail for National Optical Astronomy Observatory
    three detected planets circling their parent star, an A-type star known as HR 8799. NOAO was a founding partner in the Vera C. Rubin Observatory project....
    14 KB (1,459 words) - 10:11, 6 April 2023
  • Thumbnail for Coronagraph
    directly image planets. They did this by imaging the previously imaged HR 8799 planets using just a 1.5 m portion of the Hale Telescope. List of solar...
    15 KB (1,787 words) - 17:16, 3 August 2024
  • Christian; Doyon, René; Barman, Travis (2009). "HST/NICMOS Detection of HR 8799 b in 1998". The Astrophysical Journal Letters. 694 (2): L148. arXiv:0902...
    68 KB (7,780 words) - 23:09, 26 August 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
  • whose host stars are chemically peculiar stars. The young variable star HR 8799, which hosts four directly imaged massive planets, belongs to the group...
    11 KB (1,329 words) - 16:48, 17 July 2024
  • +2.48 ESO 439-26 133 ± 5 1 DC9 +20.52 Least luminous white dwarf star. HR 8799 (V342 Pegasi) 133.3 ± 0.2 1 kA5 hF0 mA5 V; λ Boo +5.964 Has 4 exoplanets...
    9 KB (133 words) - 07:30, 17 September 2024
  • Thumbnail for A-type main-sequence star
    star systems known to feature planets include HD 15082, Beta Pictoris, HR 8799 and HD 95086. Within 40 light years: Delta Capricorni is likely a subgiant...
    12 KB (1,063 words) - 07:59, 17 September 2024
  • Tycho Catalogues". Retrieved 2006-12-26. Kostjuk, N. D. (2002). "HD-DM-GC-HR-HIP-Bayer-Flamsteed Cross Index". Retrieved 2006-12-26. Roman, N. G. (1987)...
    32 KB (162 words) - 17:59, 2 August 2024
  • Thumbnail for HD 100546
    stars with multiple super-jovian planets at moderate/wide separations like HR 8799. While other hypothetical planets have been claimed to exist around the...
    32 KB (2,985 words) - 02:03, 23 August 2024
  • Thumbnail for Vortex coronagraph
    directly image planets. They did this by imaging the previously imaged HR 8799 planets using just a 1.5 m portion of the 5 meter Hale Telescope. Vortex...
    4 KB (410 words) - 21:22, 3 August 2024
  • image of the planets. The most famous star in the Columba association is HR 8799 which has four directly imaged planets. The group was at first not recognized...
    5 KB (510 words) - 20:20, 28 August 2024
  • Thumbnail for Discoveries of exoplanets
    system in the process of formation. HR 8799: Also on November 13, the discovery of three planets orbiting HR 8799 was announced. This was the first direct...
    83 KB (8,227 words) - 19:44, 12 September 2024
  • Thumbnail for J band (infrared)
    ISSN 0067-0049. S2CID 16850733. Oppenheimer, B. R. (2013). "Reconnaissance of the HR 8799 Exosolar System I: Near IR Spectroscopy". The Astrophysical Journal. 768...
    5 KB (482 words) - 15:19, 8 August 2024
  • Thumbnail for Fomalhaut b
    slightly larger scales, comparable to the locations of the planets around HR 8799, any additional planets of Fomalhaut must have masses below about 2 to...
    25 KB (2,662 words) - 07:44, 9 September 2024
  • Thumbnail for Fomalhaut
    a United States navy amphibious cargo ship. Exoasteroid 2M1207 GJ 758 HR 8799 Direct imaging of extrasolar planets Lists of exoplanets List of star systems...
    50 KB (4,786 words) - 10:50, 20 August 2024