DENIS-P J020529.0−115925

DENIS-P J020529.0−115925 is a brown dwarf system in the constellation of Cetus. It is located 64 light-years (19.8 parsecs) away, based on the system's parallax.^[4] It was first found in the Deep Near Infrared Survey of the Southern Sky.

DENIS-P J020529.0−115925A

DENIS-P J020529.0−115925 system with Hubble, the primary A is on the upper left Credit: Hubble Space Telescope
Observation data Epoch J2000      Equinox J2000
Constellation	Cetus
Right ascension	02h 05m 29.401s[1]
Declination	−11° 59′ 29.67″[1]
Characteristics
Spectral type	L5.5 + L8 + T0[2]
Apparent magnitude (J)	14.587[1]
Astrometry
Proper motion (μ)	RA: 427[3] mas/yr Dec.: 52[3] mas/yr
Parallax (π)	50.60±1.50 mas[4]
Distance	64 ± 2 ly (19.8 ± 0.6 pc)
Other designations
WDS J02055−1159AB, 2MASS J02052940−1159296
Database references
SIMBAD	data

This is a triple brown dwarf system: objects that do not have enough mass to fuse hydrogen like stars. The two brightest components, designated A and B respectively, are both L-type objects. As of 2003, the two were separated 0.287° along a position angle of 246°.^[2]

Component B was observed as elongated, suggesting a third component. This third component, named C, is a T-type object.^[2] It is separated about 1.9 astronomical units (au) from B, and based on a total mass of 0.1 M_☉, the two may orbit each other every 8 years.^[2]

See also

• DENIS-P J1058.7−1548
• DENIS-P J1228.2−1547
• DENIS-P J082303.1−491201 b
• DENIS-P J101807.5−285931

other triple brown dwarfs:

• 2M1510
• 2MASS J08381155+1511155
• VHS J1256–1257
• 2MASS J0920+3517