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HD 81040 b

Gas giant

Field	Value
extrasolarplanet	yes
name	HD 81040 b
image	HD 81040 Radial Velocity.png
image_scale	1.5
image_alt	Radial velocity curve of HD 81040 b
caption	Radial velocity curve of HD 81040 b
discoverer	Sozzetti et al.
discovery_site	Observatoire de Haute-Provence
in France
discovered	November 24, 2005
discovery_method	Doppler Spectroscopy
apsis	astron
semimajor	1.946 ±
eccentricity
period	1004.7 ±
inclination
asc_node
time_periastron
arg_peri
semi-amplitude	168 ± 9
star	HD 81040
mass

in France | semi-amplitude = 168 ± 9

HD 81040 b is a massive gas giant exoplanet that orbits the star HD 81040, discovered in 2005 by radial velocity. Its orbital period is just over 1000 days. It has a semimajor axis of about 1.95 AU, and its orbit is quite eccentric, at a little over 0.5.

Astrometry of HD 81040 using Gaia, published in several papers, has determined an orbital inclination of about 111°. This, combined with the minimum mass, gives a true mass of . Since the inclination is high, there is a small chance that the planet transits.

Astrometric orbit of HD 81040 b<ref name="IOW20220131"/>

References

(2006). "A massive planet to the young disc star HD 81040". Astronomy and Astrophysics.
(2021). "Precise Masses and Orbits for Nine Radial-velocity Exoplanets". The Astronomical Journal.
(31 January 2022). "Image of the Week: Astrometric Orbit of the Exoplanet-Host Star HD81040". [[ESA]]/Gaia/DPAC/CU4-CU3.
(2023). "''Gaia'' Data Release 3". Astronomy & Astrophysics.
(August 2022). "3D Selection of 167 Substellar Companions to Nearby Stars". [[The Astrophysical Journal Supplement Series]].
Winn, Joshua N.. (September 2022). "Joint Constraints on Exoplanetary Orbits from Gaia DR3 and Doppler Data". The Astronomical Journal.

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

leo-(constellation) giant-planets exoplanets-discovered-in-2005 exoplanets-detected-by-radial-velocity exoplanets-detected-by-astrometry

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