DEN 1048-3956

DEN 1048-3956
Observation data
Epoch J2000      Equinox J2000
Constellation Antlia
Right ascension 10h 48m 14.640s[1]
Declination –39° 56′ 06.24″[1]
Apparent magnitude (V) 17.4[2]
Characteristics
Spectral type M9 V or L0
Apparent magnitude (J) 9.5[1]
Astrometry
Radial velocity (Rv)–10.1 ± 0.5[1] km/s
Proper motion (μ) RA: –1198 ± 10[1] mas/yr
Dec.: –970 ± 8[1] mas/yr
Parallax (π)248.08 ± 0.61[3] mas
Distance13.15 ± 0.03 ly
(4.031 ± 0.010 pc)
Absolute magnitude (MV)19.37[2]
Details
Mass0.07[2] M☉
Luminosity0.00000356 L☉
Other designations
2MASS J10481463-3956062, 2MASSI J1048147-395606, 2MUCD 20385, DENIS-P J104814.9-395604, DENIS-P J104814.7-395606, DEN 1048-3956, USNO-B1.0 0500-00227632
Database references
SIMBADdata
Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)

DEN 1048-3956 is a brown dwarf about 13 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.

In 2005 a powerful flare from this object was detected by radio astronomy.[4]

Distance

DEN 1048-3956 distance estimates

Source Parallax, mas Distance, pc Distance, ly Distance, Pm Ref.
Deacon & Hambly (2001) 192±37 5.2+1.2
−0.8		 17+4.1
−2.7		 160.7+38.4
−26		 [5]
Jao et al. (2005) 247.71±1.55 4.037±0.025 13.17±0.08 124.6±0.8 [6]
Costa et al. (2005) 249.78±1.81 4.004±0.029 13.06+0.1
−0.09		 123.5±0.9 [7]
RECONS TOP100 (2012) 248.53±1.18[note 1] 4.024±0.019 13.12±0.06 124.2±0.6 [8]
Lurie et al. (2014) 248.08±0.61 4.031±0.01 13.15±0.03 124.38±0.31 [3]

Non-trigonometric distance estimates are marked in italic. The most precise estimate is marked in bold.

See also

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "2MASSI J1048147-395606 -- Brown Dwarf (M<0.08solMass)". Centre de Données astronomiques de Strasbourg. Retrieved 2009-12-15.
  2. ↑ 2.0 2.1 2.2 2.3 "The One Hundred Nearest Star Systems". RECONS. Georgia State University. January 1, 2009. Retrieved 2011-12-03.
  3. ↑ 3.0 3.1 Lurie, John C.; Henry, Todd J.; Jao, Wei-Chun; Quinn, Samuel N.; Winters, Jennifer G.; Ianna, Philip A.; Koerner, David W.; Riedel, Adric R.; Subasavage, John P. (2014). "The Solar Neighborhood. XXXIV. a Search for Planets Orbiting Nearby M Dwarfs Using Astrometry". The Astronomical Journal 148 (5): 91. arXiv:1407.4820. Bibcode:2014AJ....148...91L. doi:10.1088/0004-6256/148/5/91.
  4. ↑ Adam J. Burgasser1 and 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.
  5. ↑ 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.
  6. ↑ 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.
  7. ↑ 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.
  8. ↑ "RECONS TOP100". THE ONE HUNDRED NEAREST STAR SYSTEMS brought to you by RECONS (Research Consortium On Nearby Stars). 2012. Retrieved 2014-10-22.

Notes

  1. ↑ Weighted parallax based on parallaxes from Deacon & Hambly (2001), Jao et al. (2005) and Costa et al. (2005).

External links