DENIS-P J020529.0-115925

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DENIS-P J020529.0-115925A
Observation data
Epoch J2000      Equinox J2000
Constellation Cetus
Right ascension 02h 05m 29.401s
Declination -11° 59' 29.67"'
Apparent magnitude (V) 17.3
Characteristics
Spectral type L5.5
U−B color index  ?
B−V color index  ?
Variable type None
Astrometry
Radial velocity (Rv) 22 km/s
Proper motion (μ) RA: 427 mas/yr
Dec.: 52 mas/yr
Parallax (π) 50.6 ± 1.5[1] mas
Distance 64 ± 2 ly
(19.8 ± 0.6 pc)
Details
Mass 38 M
Radius R
Luminosity L
Temperature 1.800 K
Metallicity ?
Rotation ?
Age 1 - 10 billion years
DENIS-P J020529.0-115925B
Observation data
Epoch J2000      Equinox J2000
Constellation Cetus
Right ascension 02h 05m 29.401s
Declination -11° 59' 29.67"'
Apparent magnitude (V) 18.3
Characteristics
Spectral type L8
U−B color index  ?
B−V color index  ?
Variable type None
Astrometry
Radial velocity (Rv) 22 km/s
Proper motion (μ) RA: 427 mas/yr
Dec.: 52 mas/yr
Parallax (π) 50.6 ± 1.5[1] mas
Distance 64 ± 2 ly
(19.8 ± 0.6 pc)
Binary orbit
Orbit period of B and C: (P) 8 years
Space between A and B: 10 AU
Space between B and C: 1.9 AU
Details
Mass 34 M
Radius R
Luminosity L
Metallicity ?
Rotation ?
Age 1 - 10 billion years
DENIS-P J020529.0-115925C
Observation data
Epoch J2000      Equinox J2000
Constellation Cetus
Right ascension 02h 05m 29.401s
Declination -11° 59' 29.67"'
Apparent magnitude (V) 18.8
Characteristics
Spectral type T0
U−B color index  ?
B−V color index  ?
Variable type None
Astrometry
Radial velocity (Rv) 22 km/s
Proper motion (μ) RA: 427 mas/yr
Dec.: 52 mas/yr
Parallax (π) 50.6 ± 1.5[1] mas
Distance 64 ± 2 ly
(19.8 ± 0.6 pc)
Details
Mass 33 M
Radius R
Luminosity L
Metallicity ?
Rotation ?
Age 1 - 10 billion years
Other designations
2MASS J02052940-1159296, 2MASSW J0205293-115930, 2MASSI J0205293-115930, 2MUCD 10096.

DENIS-P J020529.0-115925 is an old triple carbon star system made of brown dwarfs, located in constellation Cetus at approximately 19.8 parsecs or 64.5 light-years from Earth,[1] designated in the DENIS catalog (Deep Near-Infrared Survey), [P=Provisory or provisional designation].

See also[edit]

References[edit]

  1. ^ a b c d Dahn, C. C.; Harris, Hugh C.; Vrba, Frederick J.; Guetter, Harry H.; Canzian, Blaise; Henden, Arne A.; Levine, Stephen E.; Luginbuhl, Christian B.; Monet, Alice K. B.; Monet, David G.; Pier, Jeffrey R.; Stone, Ronald C.; Walker, Richard L.; Burgasser, Adam J.; Gizis, John E.; Kirkpatrick, J. Davy; Liebert, James; Reid, I. Neill (2002). "Astrometry and Photometry for Cool Dwarfs and Brown Dwarfs". The Astronomical Journal 124 (2): 1170–1189. arXiv:astro-ph/0205050. Bibcode:2002AJ....124.1170D. doi:10.1086/341646.  edit

External links[edit]