# Gliese 229 B

> binary brown dwarf in the Lupus constellation

**Wikidata**: [Q1152575](https://www.wikidata.org/wiki/Q1152575)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Gliese_229_B)  
**Source**: https://4ort.xyz/entity/gliese-229-b


## References

1. Dwarfs Cooler than “M”: The Definition of Spectral Type “L” Using Discoveries from the 2 Micron All‐Sky Survey (2MASS)
2. SIMBAD
3. The Spectra of T Dwarfs. I. Near‐Infrared Data and Spectral Classification
4. Discovery of a Brown Dwarf Companion to Gliese 570ABC: A 2MASS T Dwarf Significantly Cooler than Gliese 229B
5. Extrasolar Planets Encyclopaedia
6. 3-D selection of 167 sub-stellar companions to nearby stars
7. The Brown Dwarf Kinematics Project (BDKP). III. Parallaxes for 70 ultracool dwarfs
8. Search for Nearby Earth Analogs. II. Detection of Five New Planets, Eight Planet Candidates, and Confirmation of Three Planets around Nine Nearby M Dwarfs
9. Further defining spectral type "Y" and exploring the low-mass end of the field brown dwarf mass function
10. The brown dwarf kinematics project I. Proper motions and tangential velocities for a large sample of late-type M, L, and T dwarfs