Beta Pictoris c
Discovery | |
---|---|
Discovered by | Lagrange et al.[1] |
Discovery site | La Silla Observatory |
Discovery date | 19 August 2019[1] |
Radial velocity method | |
Orbital characteristics[2] | |
2.680+0.016 −0.015 AU | |
Eccentricity | 0.314+0.024 −0.034 |
3.266+0.015 −0.012 yr | |
Inclination | 88.947°+0.083° −0.091° |
31.081°+0.060° −0.048° | |
243.890°+2.201° −3.326° | |
Semi-amplitude | 137.999+16.442 −15.079 m/s |
Star | Beta Pictoris |
Physical characteristics | |
Mean radius | 1.2±0.1 RJ[3] |
Mass | 10.139+1.175 −1.031 MJ[2] |
Temperature | 1250±50 K[3] |
Beta Pictoris c (abbreviated as β Pic c) is the second exoplanet discovered orbiting the young star Beta Pictoris, located approximately 63 light-years away from Earth in the constellation of Pictor. Its mass is around nine times that of Jupiter, and it orbits at around 2.7 astronomical units (AU) from Beta Pictoris, about 3.5 times closer to its parent star than Beta Pictoris b.[1] It has an orbital period of 1,200 days (3.3 years).[1] The orbit of Beta Pictoris c is moderately eccentric, with an eccentricity of 0.24.[4][5]
This exoplanet is notable for having been detected by three different
Physical characteristics
Mass and radius
Beta Pictoris c is a super-Jupiter, an exoplanet that has a radius and mass greater than that of the planet Jupiter. It has a mass of around 10 Jupiter masses (MJ)[1] and a radius of about 1.2 times that of Jupiter.[3]
Host star
The planet orbits an
Orbit
Beta Pictoris c orbits at around 2.7 astronomical units (400 million kilometres) from Beta Pictoris, about 3.5 times closer than Beta Pictoris b.[5] It has an orbital period of 1,200 days (3.3 years).[1] The planet spends most or all of its orbit in the habitable zone.[9]
Discovery
Beta Pictoris c was detected indirectly, through 10 years of observation
The European Southern Observatory confirmed the presence of Beta Pictoris c, on 6 October 2020, through the use of optical interferometry.[3] With a semi-major axis of approximatively 2.7 astronomical units, Beta Pictoris c is, as of 2020, the closest extrasolar planet to its star ever photographed.[4]
As of 2022, the orbital parameters and mass of Beta Pictoris c have been measured using a combination of data from
References
- ^ S2CID 202126059. Retrieved 20 August 2019.
- ^ S2CID 251864022.
- ^ . Retrieved 26 August 2020.
- ^ ISSN 0004-6361. Retrieved 7 October 2020.
- ^ a b Young, Monica (19 August 2019). "Beta Pic's New Planet, Jupiter's Fuzzy Core & An Ancient Star". Sky & Telescope. Retrieved 19 August 2019.
- S2CID 226306610.
- S2CID 120493760.
- S2CID 250741593.
- ^ "What is the habitable zone around my star?". Worldbuilding Stack Exchange. Retrieved 30 November 2023.
- ^ "A second planet in the Beta Pictoris system". Nanowerk. 19 August 2019. Retrieved 20 August 2019.
- ^ Starr, Michelle (2 October 2020). "Scientists Reveal First Direct Image of an Exoplanet Only 63 Light-Years Away". sciencealert.com. Retrieved 2 October 2020.
- S2CID 237592885.