TVLM513-46546
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Boötes |
| Right ascension | 15h 01m 08.187s |
| Declination | +22° 50' 02.04"' |
| Characteristics | |
| Spectral type | M8.5V |
| Astrometry | |
| Proper motion (μ) | RA: -55 mas/yr Dec.: -59 mas/yr |
| Parallax (π) | 92.92 ± 0.23[1] mas |
| Distance | 35.10 ± 0.09 ly (10.76 ± 0.03 pc) |
| Details | |
| Mass | 0.09 M☉ |
| Radius | 0.11 R☉ |
| Luminosity | 0.00042 L☉ |
| Temperature | 2,500 K |
| Age | >1 billion years |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
|
TVLM513-46546 is an ultracool brown dwarf in the constellation Boötes, exhibiting a flare star activity and all the same varying semi-regularly due to dissimilarly bright hemispheres and a rotation period of about two days. The star has a mass as low as 90 times the mass of Jupiter (or 9 percent of Sun's mass) and an estimated radius of 11 percent that of Sun (nearly a Jupiter-sized star). The star also shows hints of an unseen companion with undetermined mass. Future monitoring will be able to confirm or rule out low-mass stellar or even planetary mass companions (down to 2-10 Jupiter masses), with orbital periods spanning between 1 and 15 days.[2] Assuming a stellar luminosity of 0.042 percent that of Sun, the habitable zone where an Earth-like planet may retain liquid water at comfortable temperatures would be located within 0.02 Astronomical Units (roughly 10 times the distance of the Moon from Earth).
References
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External links
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