From Surf Wiki (app.surf) — the open knowledge base
Pi Mensae b
Super-Jovian planet orbiting Pi Mensae
Super-Jovian planet orbiting Pi Mensae
| Field | Value |
|---|---|
| name | Pi Mensae b |
| discoverer | Jones et al. |
| discovery_site | Australia Anglo-Australian |
| Telescope | |
| discovered | 15 October 2001 |
| discovery_method | Doppler spectroscopy |
| orbit_ref | |
| apsis | astron |
| semimajor | |
| period | 5.719 ± |
| time_periastron | |
| eccentricity | |
| arg_peri | |
| semi-amplitude | |
| star | Pi Mensae |
| inclination | |
| asc_node | |
| physical_ref | |
| mass |
Telescope](anglo-australian-telescope) | semi-amplitude = Pi Mensae b (π Men b, π Mensae b), also known as HD 39091 b, is an extrasolar planet approximately 60 light-years away in the constellation of Mensa. The planet was announced orbiting the yellow main-sequence star{{cite journal | display-authors=1
Detection and discovery
On October 15, 2001, a team of astronomers including Jones, Butler, Tinney, Marcy, Penny, McCarthy, Carter, and Pourbaix announced the discovery of one of the most massive extrasolar planets that have yet been observed. It was discovered by the Anglo-Australian Planet Search team, using a Doppler spectrometer mounted on the Anglo-Australian Telescope.
Physical characteristics
Pi Mensae b has a very eccentric orbit and takes 5.72 years to revolve around the star. The semi-major axis of the planet's orbit around the star is 3.31 AU. This planet passes through the star's habitable zone at periastron (1.19 AU) while at apastron, it passes to around Jupiter-Sun distance (5.44 AU). The gravitational influence of this planet would disrupt the orbit of any potentially Earth-like planet.
Pi Mensae b is over ten times more massive than Jupiter, the most massive planet in the Solar System. It will have 10 times the surface gravity of Jupiter alone and could be incandescent (glowing).
In 2020, the true mass of Pi Mensae b was measured to be via astrometry. Since this is greater than 13 Jupiter masses, the object could be considered a brown dwarf. The most recent astrometric results as of 2022 have revised this mass estimate slightly downward, to .
The plane of orbit of Pi Mensae b is strongly inclined to equatorial plane of the star, with the misalignment equal to 24±4.1°.
References
References
- Jones H., Vogt S., Butler P., Marcy G., Fischer D., Pourbaix D., Apps K., & Laughlin G.
- "HD 39091".
- Jones. (2002). "A probable planetary companion to HD 39091 from Anglo-Australian Planet Search". [[Monthly Notices of the Royal Astronomical Society]].
- (2021). "Orbital misalignment of the super-Earth π Men c with the spin of its star". Monthly Notices of the Royal Astronomical Society.
- Butler. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal.
- (2020). "A precise architecture characterization of theπMensae planetary system". Astronomy & Astrophysics.
- (August 2022). "3D Selection of 167 Substellar Companions to Nearby Stars". [[The Astrophysical Journal Supplement Series]].
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.
Ask Mako anything about Pi Mensae b — get instant answers, deeper analysis, and related topics.
Research with MakoFree with your Surf account
Create a free account to save articles, ask Mako questions, and organize your research.
Sign up freeThis content may have been generated or modified by AI. CloudSurf Software LLC is not responsible for the accuracy, completeness, or reliability of AI-generated content. Always verify important information from primary sources.
Report