OTS 44

OTS 44
OTS 44
AA Tauri.jpg
An artist's concept of OTS 44's dust disk
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Chamaeleon
Right ascension 11h 10m 11.5s
Declination -76° 32' 13"
Apparent magnitude (V) +14.61
Spectral type M9.5V
U−B color index ?
B−V color index ?
Variable type ?
Radial velocity (Rv) ? km/s
Proper motion (μ) RA: ? mas/yr
Dec.: ? mas/yr
Parallax (π) ? ± ? mas
Distance 554 ly
(170 pc)
Absolute magnitude (MV) ?
Mass 15 MJ (0.0143 M
Radius 2.5 RJ (0.258 R
Luminosity ? L
Temperature 2,300 K
Metallicity ?
Rotation ?
Age ? years

OTS 44 is a brown dwarf about 550 light-years away in the constellation Chamaeleon. It is among the smallest known brown dwarfs.

OTS 44 has a mass of about 15 times that of Jupiter, or about 1.5 % that of the Sun. Its radius is about 20% of the Sun.

There are indications that OTS is surrounded by a disc of dust and particles of stone and ice, a disc that could eventually develop into a planetary system.

See also

  • SCR 1845-6357, a binary system comprising a red dwarf and a brown dwarf
  • Cha 110913-773444, an astronomical object (that may be a free-floating planet) surrounded by what appears to be a protoplanetary disk

External links

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