V342 Pegasi, BD+20 5278, FK5 3850, GC 32209, HD 218396, HIP 114189, PPM 115157, SAO 91022, TYC 1718-2350-1.[2]
Database references
SIMBAD
data
Exoplanet Archive
data
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. It has roughly 1.5 times the Sun's mass and 4.9 times its luminosity. It is part of a system that also contains a debris disk and at least four massive planets. Those planets, along with Fomalhaut b, were the first exoplanets whose orbital motion was confirmed by direct imaging. The star is a Gamma Doradus variable: its luminosity changes because of non-radial pulsations of its surface. The star is also classified as a Lambda Boötis star, which means its surface layers are depleted in iron peak elements. It is the only known star which is simultaneously a Gamma Doradus variable, a Lambda Boötis type, and a Vega-like star (a star with excess infrared emission caused by a circumstellar disk).
^ abcdeCite error: The named reference Gaia-EDR3 was invoked but never defined (see the help page).
^ abcdeCite error: The named reference simbad-HR8799 was invoked but never defined (see the help page).
^ abcdefgCite error: The named reference Gray-Kaye-1999 was invoked but never defined (see the help page).
^Cite error: The named reference Kaye-Handler-etal-1999 was invoked but never defined (see the help page).
^Cite error: The named reference Yale-BSC-1991-06 was invoked but never defined (see the help page).
^Sepulveda, Aldo G.; Bowler, Brendan P. (2022). "Dynamical Mass of the Exoplanet Host Star HR 8799". The Astronomical Journal. 163 (2): 52. arXiv:2111.12090. Bibcode:2022AJ....163...52S. doi:10.3847/1538-3881/ac3bb5. S2CID 232572566.
^Cite error: The named reference Wang-Wang-etal-2020 was invoked but never defined (see the help page).
^Cite error: The named reference Marois-etal-2011 was invoked but never defined (see the help page).
Cite error: There are <ref group=lower-alpha> tags or {{efn}} templates on this page, but the references will not show without a {{reflist|group=lower-alpha}} template or {{notelist}} template (see the help page).
HR8799 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....
HR8799 b is an extrasolar planet located approximately 129 light-years away in the constellation of Pegasus, orbiting the 6th magnitude Lambda Boötis...
HR8799 e is a large exoplanet, orbiting the star HR8799, which lies 129 light-years from Earth. This gas giant is between 5 and 10 times the mass of...
HR8799 c is an extrasolar planet located approximately 129 light-years away in the constellation of Pegasus, orbiting the 6th magnitude Lambda Boötis...
HR8799 d is an extrasolar planet located approximately 129 light-years away in the constellation of Pegasus, orbiting the 6th magnitude Lambda Boötis...
and Gemini Observatory. Three planets were directly observed orbiting HR8799, whose masses are approximately ten, ten, and seven times that of Jupiter...
most recent is the discovery of the complex extrasolar planets system HR8799. HR8799 is the first direct observation of an exoplanet in history. The Canadian...
This list includes the four members of the multi-planet system that orbit HR8799. It is unlikely or at least unclear if objects on a wide orbit (≥100 AU)...
Lafreniere, D. (2010-02-10). "Spatially resolved spectroscopy of the exoplanet HR8799 c". The Astrophysical Journal. 710 (1): L35–L38. arXiv:1001.2017. Bibcode:2010ApJ...
exoplanet-hosting stars, including the first discovered by direct imaging (HR8799), are known to also host debris disks. The nearby star 55 Cancri, a system...
age of the star, similar to the masses of directly imaged planets around HR8799 and beta Pictoris. However, it is unclear whether ROXs 42Bb formed like...
directly image planets. They did this by imaging the previously imaged HR8799 planets using just a 1.5 m portion of the Hale Telescope. List of solar...
first directly imaged planets) around HR8799 and a 2010 paper discovering a fourth imaged planet in the system: HR8799 e. In 1982, Zuckerman co-edited a...
stars with multiple super-jovian planets at moderate/wide separations like HR8799. While other hypothetical planets have been claimed to exist around the...
three detected planets circling their parent star, an A-type star known as HR8799. NOAO was a founding partner in the Vera C. Rubin Observatory project....
host stars are the chemically peculiar stars. The young variable star HR8799, which hosts four directly imaged massive planets, belongs to the group...
more massive field brown dwarfs and young L/T transition exoplanets like HR8799 d. Jointly modeling relative astrometry of HIP 99770 b with absolute astrometry...
First multi-planet extrasolar system directly imaged HR8799 b HR8799 c HR8799 d HR8799 e HR8799 2008 First planet discovered with a retrograde orbit...
slightly larger scales, comparable to the locations of the planets around HR8799, any additional planets of Fomalhaut must have masses below about 2 to...
Ji; et al. (20 November 2018). "Detecting Water in the Atmosphere of HR8799 c with L-band High-dispersion Spectroscopy Aided by Adaptive Optics". The...
image of the planets. The most famous star in the Columba association is HR8799 which has four directly imaged planets. The group was at first not recognized...
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)...
directly image planets. They did this by imaging the previously imaged HR8799 planets using just a 1.5 m portion of the 5 meter Hale Telescope. Vortex...
system in the process of formation. HR8799: Also on November 13, the discovery of three planets orbiting HR8799 was announced. This was the first direct...
Interferometer (VLTI), announce the first direct detection of an exoplanet, HR8799 e, using optical interferometry. Chinese scientists report inserting the...
Global Information