Teide 1

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Teide 1
relative sizes
Estimated relative size of the planet Jupiter and the brown dwarfs WISE 1828+2650, Gliese 229B, and Teide 1 compared to the Sun and a red dwarf.
Credit: MPIA/V. Joergens.
Observation data
Epoch J2000      Equinox J2000
Constellation Taurus
Right ascension  3h 47m 17.925s[1]
Declination +24° 22′ 31.71″[1]
Spectral type M8[2]
Apparent magnitude (J) 16.215[1]
Apparent magnitude (H) 15.591[1]
Apparent magnitude (K) 15.096[1]
Proper motion (μ) RA: 21.40[2] mas/yr
Dec.: -42.73[2] mas/yr
Parallax (π)8.40 mas
Distance400 ly
(120 pc)
Mass57 ± 15[3] MJup
Radius3.78[3] RJup
Luminosity0.0008–0.0005[4] L
Surface gravity (log g)6.6[citation needed] cgs
Temperature2,600 ± 150[5] K
Age0.12[citation needed] Gyr
Other designations
Melotte 22 Teide 1, Melotte 22 BPL 137, Melotte 22 NPL 39, EPIC 211088076, 2MASS J03471792+2422317, Gaia DR2 66734514652754688[2]
Database references

Teide 1 was the first brown dwarf to be verified, in 1995.[6] It is located in the Pleiades open star cluster, approximately 400 light-years (120 pc) from Earth.

This object is more massive than a planet (57 ± 15 MJ),[5] but less massive than a star (0.0544 MSun). The radius of the brown dwarf is four times that of Jupiter. Its surface temperature is 2,600 ± 150 K,[5] which is about half that of the Sun. Its luminosity is 0.08–0.05% of that of the Sun.[4] Its age is only 120 million years compared to the Sun's age of 4.68 billion years.


  1. ^ a b c d e Cutri, R. M. (2003). "2MASS All-Sky Catalog of Point Sources". VizieR On-line Data Catalog. Bibcode:2003yCat.2246....0C.
  2. ^ a b c d "2MASS J03471792+2422317". SIMBAD. Centre de données astronomiques de Strasbourg.
  3. ^ a b "All Exoplanets". Exoplanet Kyoto.
  4. ^ a b Brown dwarfs in the Pleiades cluster confirmed by the lithium test
  5. ^ a b c Mid-IR Observations of the Pleiades Brown Dwarfs Teide 1 & Calar 3 (Leech 2000)
  6. ^ Rebolo, Rafael (2014), "Teide 1 and the Discovery of Brown Dwarfs", in Joergens, Viki (ed.), 50 Years of Brown Dwarfs - From Prediction to Discovery to Forefront of Research, Astrophysics and Space Science Library, 401, Springer, pp. 25–50, ISBN 978-3-319-01162-2

External links[edit]