astro.wikisort.org - Stern

2MASS J03480772-6022270 ist ein Brauner Zwerg der Spektralklasse T7 im Sternbild Netz. Er wurde 2003 von Adam J. Burgasser, Michael W. McElwain & J. Davy Kirkpatrick entdeckt. Seine Position verschiebt sich aufgrund seiner Eigenbewegung jährlich um 0,77 Bogensekunden.

Brauner Zwerg 2MASS J03480772-6022270
Beobachtungsdaten Äquinoktium: J2000.0, Epoche: J2000.0
Sternbild	Netz
Rektaszension	03h 48m 7,72s
Deklination	-60° 22′ 27″
Typisierung
Spektralklasse	T7
Physikalische Eigenschaften
Andere Bezeichnungen und Katalogeinträge
Weitere Bezeichnungen: 2MASSI J03480772-6022270

Weblinks

• Eintrag bei DwarfArchives.org (englisch)
• Burgasser, Adam J.; McElwain, Michael W.; Kirkpatrick, J. Davy: The 2MASS Wide-Field T Dwarf Search. II. Discovery of Three T Dwarfs in the Southern Hemisphere. In: The Astronomical Journal, 2003, Band 126, Nummer 5, S. 2487–2494. bibcode:2003AJ....126.2487B (englisch)
• Simbad

На других языках

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- [de] 2MASS J03480772-6022270

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[en] 2MASS J03480772−6022270

2MASS J03480772−6022270 (abbreviated to 2MASS J0348−6022) is a brown dwarf of spectral class T7, located in the constellation Reticulum approximately 27.2 light-years from the Sun. It was discovered by astronomer Adam Burgasser and collaborators of the 2MASS Wide-Field T Dwarf Search in 2002. With a rotation period of 1.08 hours, it is the fastest-rotating brown dwarf confirmed as of 2022[update].[4] The rotational velocity at its equator is over 100 km/s (62 mi/s), approaching the predicted rotational speed limit beyond which it would break apart due to centripetal forces.[5] As a consequence of its rapid rotation, the brown dwarf is slightly flattened at its poles to a similar degree as Saturn, the most oblate planet in the Solar System. Its rapid rotation may enable strong auroral radio emissions via charged particle interactions in its magnetic field, as observed in other known rapidly-rotating brown dwarfs.[2]

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