DENIS J1048−3956

DENIS J1048−3956
Observation data; Epoch J2000 Equinox J2000
Constellation	Antlia
Right ascension	10h 48m 14.640s
Declination	−39° 56′ 06.24″
Apparent magnitude (V)	17.4
Characteristics
Spectral type	M9
Apparent magnitude (J)	9.5
Astrometry
Radial velocity (Rv)	−10.1 ± 0.5 km/s
Proper motion (μ)	RA: −1198 ± 10 mas/yr ; Dec.: −970 ± 8 mas/yr
Parallax (π)	247.2156 ± 0.0512 mas
Distance	13.193 ± 0.003 ly ; (4.0451 ± 0.0008 pc)
Absolute magnitude (MV)	19.37
Details
Mass	0.075 M☉
Radius	0.108 R☉
Surface gravity (log g)	4.3±0.3 cgs
Temperature	2450±50 K
Age	<1 Gyr
Other designations
	2MASS J10481463−3956062, 2MASSI J1048147−395606, 20385, DENIS-P J104814.9−395604, DENIS-P J104814.7−395606, DEN 1048−3956, 0500-00227632
Database references
SIMBAD	data
Data sources:
Hipparcos Catalogue,; CCDM (2002),; Bright Star Catalogue (5th rev. ed.)

DENIS J1048−3956 is a brown dwarf about 13.1 light years from Earth in the southern constellation of Antlia, among the closest interstellar objects to Earth. This substellar object is very dim with an apparent magnitude of about 17,^[2] and will require a telescope with a camera to be seen. It was discovered in 2000 by Xavier Delfosse (Institute of Astrophysics of the Canary Islands, now Observatoire de Grenoble) and Thierry Forveille (Canada–France–Hawaii Telescope Corporation), with the assistance of nine other astronomers.

Kinematically, DENIS J1048−3956 belongs to the young thin disc.^[3] In 2005 a powerful flare from this object was detected by radio astronomy.^[6]

References[]

^ ^a ^b ^c ^d ^e ^f "2MASSI J1048147-395606 -- Brown Dwarf (M<0.08solMass)". Centre de Données astronomiques de Strasbourg. Retrieved 2009-12-15.
^ ^a ^b ^c "The One Hundred Nearest Star Systems". RECONS. Georgia State University. January 1, 2009. Retrieved 2011-12-03.
^ ^a ^b ^c ^d ^e The ultracool dwarf DENIS-P J104814.7-395606 Chromospheres and coronae at the low-mass end of the main-sequence
^ Brown, 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. Gaia EDR3 record for this source at VizieR.
^ ^a ^b Global Analysis of the TRAPPIST Ultra-Cool Dwarf Transit Survey, 2020, arXiv:2007.07278
^ Adam J. Burgasser & Mary E. Putman (June 10, 2005). "Quiescent Radio Emission from Southern Late-Type M Dwarfs and a Spectacular Radio Flare from the M8 Dwarf DENIS 1048−3956". The Astrophysical Journal. 626 (1): 486–497. arXiv:astro-ph/0502365. Bibcode:2005ApJ...626..486B. doi:10.1086/429788. S2CID 13286883.

Deacon, N. R.; Hambly, N. C. (2001). "The trigonometric parallax of DENIS-P J104814.7-395606.1". Astronomy and Astrophysics. 380: 148–150. Bibcode:2001A&A...380..148D. doi:10.1051/0004-6361:20011290.
Jao, Wei-Chun; Henry, Todd J.; Subasavage, John P.; Brown, Misty A.; Ianna, Philip A.; Bartlett, Jennifer L.; Costa, Edgardo; Méndez, René A. (2005). "The Solar Neighborhood. XIII. Parallax Results from the CTIOPI 0.9 Meter Program: Stars with mu >= 1.0" yr-1 (MOTION Sample)". The Astronomical Journal. 129 (4): 1954–1967. arXiv:astro-ph/0502167. Bibcode:2005AJ....129.1954J. doi:10.1086/428489. S2CID 16164903.
Costa, Edgardo; Méndez, René A.; Jao, W.-C.; Henry, Todd J.; Subasavage, John P.; Brown, Misty A.; Ianna, Philip A.; Bartlett, Jennifer (2005). "The Solar Neighborhood. XIV. Parallaxes from the Cerro Tololo Inter-American Observatory Parallax Investigation-First Results from the 1.5 m Telescope Program". The Astronomical Journal. 130 (1): 337–349. Bibcode:2005AJ....130..337C. doi:10.1086/430473.

External links[]

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[SIMBAD-1] ^ ^a ^b ^c ^d ^e ^f "2MASSI J1048147-395606 -- Brown Dwarf (M<0.08solMass)". Centre de Données astronomiques de Strasbourg. Retrieved 2009-12-15.

[recons-2] "The One Hundred Nearest Star Systems". RECONS. Georgia State University. January 1, 2009. Retrieved 2011-12-03.

[Stelzer2012-3] The ultracool dwarf DENIS-P J104814.7-395606 Chromospheres and coronae at the low-mass end of the main-sequence

[GaiaEDR3-4] Brown, 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. Gaia EDR3 record for this source at VizieR.

[Lienhart2020-5] Global Analysis of the TRAPPIST Ultra-Cool Dwarf Transit Survey, 2020, arXiv:2007.07278

[Burgasser2005-6] Adam J. Burgasser & Mary E. Putman (June 10, 2005). "Quiescent Radio Emission from Southern Late-Type M Dwarfs and a Spectacular Radio Flare from the M8 Dwarf DENIS 1048−3956". The Astrophysical Journal. 626 (1): 486–497. arXiv:astro-ph/0502365. Bibcode:2005ApJ...626..486B. doi:10.1086/429788. S2CID 13286883.

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Observation data Epoch J2000 Equinox J2000
Constellation	Antlia
Right ascension	10^h 48^m 14.640^s^[1]
Declination	−39° 56′ 06.24″^[1]
Apparent magnitude (V)	17.4^[2]
Characteristics
Spectral type	M9^[3]
Apparent magnitude (J)	9.5^[1]
Astrometry

Radial velocity (R_v)	−10.1 ± 0.5^[1] km/s
Proper motion (μ)	RA: −1198 ± 10^[1] mas/yr Dec.: −970 ± 8^[1] mas/yr
Parallax (π)	247.2156 ± 0.0512^[4] mas
Distance	13.193 ± 0.003 ly (4.0451 ± 0.0008 pc)
Absolute magnitude (M_V)	19.37^[2]

Details

Mass	0.075^[5] `M`_☉
Radius	0.108^[5] `R`_☉
Surface gravity (log g)	4.3±0.3^[3] cgs
Temperature	2450±50^[3] K
Age	<1^[3] Gyr

Other designations
2MASS J10481463−3956062, 2MASSI J1048147−395606, 20385, DENIS-P J104814.9−395604, DENIS-P J104814.7−395606, DEN 1048−3956, 0500-00227632
Database references
SIMBAD	data
Data sources:
Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.)

DENIS J1048−3956

See also[]

References[]

External links[]