2MASSW J1207334−393254, 2MASS J12073346-3932539, TWA 27[1]
Database references
SIMBAD
data
2M1207, 2M1207A or 2MASS J12073346–3932539 is a brown dwarf located in the constellation Centaurus; a companion object, 2M1207b, may be the first extrasolar planetary-mass companion to be directly imaged, and is the first discovered orbiting a brown dwarf.[5][6]
2M1207 was discovered during the course of the 2MASS infrared sky survey: hence the "2M" in its name, followed by its celestial coordinates. With a fairly early (for a brown dwarf) spectral type of M8,[1] it is very young, and probably a member of the TW Hydrae association. Its estimated mass is around 25 Jupiter masses.[4] The companion, 2M1207b, is estimated to have a mass of 5–6 Jupiter masses.[7] Still glowing red hot, it will shrink to a size slightly smaller than Jupiter as it cools over the next few billion years.
An initial photometric estimate for the distance to 2M1207 was 70 parsecs.[4] In December 2005, American astronomer Eric Mamajek [fr] reported a more accurate distance (53 ± 6 parsecs) to 2M1207 using the moving cluster method.[8] The new distance gives a fainter luminosity for 2M1207. Recent trigonometric parallax results have confirmed this moving cluster distance, leading to a distance estimate of 53 ± 1 parsec or 172 ± 3 light years.[4]
^ abcde"TWA 27". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved June 15, 2008.
^ abcAn accurate distance to 2M1207Ab, C. Ducourant, R. Teixeira, G. Chauvin, G. Daigne, J.-F. Le Campion, Inseok Song, and B. Zuckerman, Astronomy and Astrophysics477, #1 (January 2008), pp. L1–L4. Bibcode:2008A&A...477L...1D doi:10.1051/0004-6361:20078886.
^ abcBrown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
^ abcd"The Distance to the 2M1207 System" Archived 2008-01-24 at the Wayback Machine, Eric Mamajek, November 8, 2007. Accessed on line June 15, 2008.
^ abcdeThe Planetary Mass Companion 2MASS 1207-3932B: Temperature, Mass, and Evidence for an Edge-on Disk, Subhanjoy Mohanty, Ray Jayawardhana, Nuria Huelamo, and Eric Mamajek, Astrophysical Journal657, #2 (March 2007), pp. 1064–1091. Bibcode:2007ApJ...657.1064M doi:10.1086/510877.
^Chauvin, G.; Lagrange, A.-M.; Dumas, C.; Zuckerman, B.; Mouillet, D.; Song, I.; Beuzit, J.-L.; Lowrance, P. (2004). "A Giant Planet Candidate near a Young Brown Dwarf". Astron. Astrophys. 425 (2): L29–L32. arXiv:astro-ph/0409323. Bibcode:2004A&A...425L..29C. doi:10.1051/0004-6361:200400056. S2CID 15948759.
^Luhman, K. L.; Tremblin, P.; Birkmann, S. M.; Manjavacas, E.; Valenti, J.; Alves de Oliveira, C.; Beck, T. L.; Giardino, G.; Lützgendorf, N.; Rauscher, B. J.; Sirianni, M. (2023-06-01). "JWST/NIRSpec Observations of the Planetary Mass Companion TWA 27B". The Astrophysical Journal. 949 (2): L36. arXiv:2305.18603. Bibcode:2023ApJ...949L..36L. doi:10.3847/2041-8213/acd635. ISSN 0004-637X.
^Mamajek (2005). "A Moving Cluster Distance to the Exoplanet 2M1207b in the TW Hydrae Association". The Astrophysical Journal. 634 (2): 1385–1394. arXiv:astro-ph/0507416. Bibcode:2005ApJ...634.1385M. doi:10.1086/468181. S2CID 17162407.
2M1207, 2M1207A or 2MASS J12073346–3932539 is a brown dwarf located in the constellation Centaurus; a companion object, 2M1207b, may be the first extrasolar...
2M1207b is a planetary-mass object orbiting the brown dwarf 2M1207, in the constellation Centaurus, approximately 170 light-years from Earth. It is one...
also discovered in 1995. The first brown dwarf found to have a planet was 2M1207, discovered in 2004. As of 2015[update], more than 2,800 brown dwarfs have...
composition, it is the first published "hot Neptune" or "super-Earth". 2M1207 b: The first planet found around a brown dwarf. The planet is also the first...
discovered a total of 173, including 2MASS 0939-2448, 2MASS 0415-0935, 2M1207, and 2MASS J04414489+2301513. An extensive survey of low mass stars, the...
A very young brown dwarf that was further studied with this method is 2M1207 and the companion 2M1207b. Based on the location, proper motion and spectral...
Fomalhaut (AK-22) was a United States navy amphibious cargo ship. Exoasteroid 2M1207 GJ 758 HR 8799 Direct imaging of extrasolar planets Lists of exoplanets...
group member), HD 98800 (a quadruple star system with debris disk), and 2M1207 (accreting brown dwarf with remarkable planetary-mass companion 2M1207b)...
in Chile to produce an image of 2M1207b, a companion to the brown dwarf 2M1207. In the following year, the planetary status of the companion was confirmed...
First exoplanet discovered by directly imaging the extrasolar planet 2M1207 b 2M1207 2004/ 2005 May be a brown dwarf instead of a planet, depending on formation...
000 TOI-715 167,000 Has one confirmed, potentially habitable exoplanet 2M1207 A 173,925 Brown dwarf Has one confirmed exoplanet CM Draconis A 176,000...
exoplanet to be photographed, 2M1207b, is in orbit around a star called 2M1207. Astronomers were only able to photograph this planet because it is a very...
impression was created before it was known that the disk is misaligned. 2M1207 HD 188753 UX Tauri V4046 Sagittarii Fabricius, C.; Høg, E.; Makarov, V....