Teide 1
 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. |
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| Observation data Epoch J2000 Equinox J2000 |
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|---|---|
| Constellation | Taurus |
| Right ascension | 3h 47m 17.925s |
| Declination | +24° 22′ 31.71″ |
| Characteristics | |
| Spectral type | M8 |
| Apparent magnitude (J) | 16.215 |
| Apparent magnitude (H) | 15.591 |
| Apparent magnitude (K) | 15.096 |
| Astrometry | |
| Proper motion (μ) |
RA: 21.40 mas/yr Dec.: -42.73 mas/yr |
| Parallax (π) | 8.40 mas |
| Distance | 400 ly (120 pc) |
| Details | |
| Mass | 0.0544 M☉ |
| Mass | 57 ± 15 MJup |
| Radius | 0.38 R☉ |
| Radius | 3.78 RJup |
| Luminosity | 0.0008–0.0005 L☉ |
| Surface gravity (log g) | 6.6 cgs |
| Temperature | 2,600 ± 150 K |
| Age | 0.12 Gyr |
| Other designations | |
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Melotte 22 Teide 1, Melotte 22 BPL 137, Melotte 22 NPL 39, EPIC 211088076, 2MASS J03471792+2422317
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| Database references | |
| SIMBAD | data |
Teide 1 was the first brown dwarf to be verified, in 1995. 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), but less massive than a star (0.0544 MSun). The radius of the brown dwarf is about that of Jupiter (or one-tenth that of the Sun). Its surface temperature is 2600 ± 150 K, which is about half that of the Sun. Its luminosity is 0.08–0.05% of that of the Sun. Its age is only 120 million years compared to the Sun's age of 4.68 billion years.
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