Statements (23)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
white dwarf
|
| gptkbp:alternativeName |
GJ 229B
Gl 229B |
| gptkbp:apparentMagnitude |
~20
|
| gptkbp:atmosphere |
methane
water vapor carbon monoxide |
| gptkbp:diameter |
~0.1 solar radii
|
| gptkbp:discoveredBy |
Nakajima et al.
|
| gptkbp:discoveredIn |
1995
|
| gptkbp:distanceFromEarth |
about 19 light-years
|
| https://www.w3.org/2000/01/rdf-schema#label |
Gliese 229B
|
| gptkbp:locatedIn |
gptkb:Lepus
|
| gptkbp:locatedInSystem |
gptkb:Gliese_229
|
| gptkbp:mainStar |
Gliese 229A
|
| gptkbp:mass |
~0.02 solar masses
|
| gptkbp:notableFor |
first unambiguous detection of a methane brown dwarf
|
| gptkbp:orbitType |
unknown
|
| gptkbp:separationFromPrimary |
~44 AU
|
| gptkbp:spectralType |
gptkb:T7
|
| gptkbp:temperature |
~950 K
|
| gptkbp:bfsParent |
gptkb:Gliese_229
|
| gptkbp:bfsLayer |
7
|