2MASS J15394189-0520428
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L-dwarf 2MASS J15394189-0520428 |
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| AladinLite | |||
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Observation dates equinox : J2000.0 , epoch : J2000.0 |
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| Constellation | Libra | ||
| Right ascension | 15 h 39 m 41.92 s | ||
| declination | -05 ° 20 ′ 42.8 ″ | ||
| Typing | |||
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rel. Brightness (G-band) |
(19.01 ± 0.01) mag | ||
| rel. Brightness (J-band) |
(13.92 ± 0.03) mag | ||
| Spectral class | L4.2 V | ||
| Astrometry | |||
| Radial velocity | (27.33 ± 0.24) km / s | ||
| parallax | (58.82 ± 0.42) mas | ||
| distance | (55.42 ± 0.40) ly 17.00 ± 0.12 pc |
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| Proper movement | |||
| Rec. Share: | (590.20 ± 0.75) mas / a | ||
| Dec. portion: | (104.57 ± 0.73) mas / a | ||
| Physical Properties | |||
| Dimensions | (0.06) M ☉ | ||
| radius | (0.10) R ☉ | ||
| Luminosity |
(0.89 ± 0.11) × 10 −4 L ☉ |
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| Effective temperature | (1753 ± 85) K. | ||
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Other names and catalog entries |
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2MASS J15394189-0520428 is an ultracool dwarf located about 55 light years from Earth in the constellation Libra . It was founded in 2004 by Tim R. Kendall et al. discovered.
It belongs to the spectral class L4.2 V; its surface temperature is around 1750 Kelvin .
Web links
- Entry at DwarfArchives.org (English)
- Kendall, TR; Delfosse, X .; Martín, EL; Forveille, T .: Discovery of very nearby ultracool dwarfs from DENIS . In: Astronomy and Astrophysics, v.416, p.L17-L20 (2004) bibcode : 2004A & A ... 416L..17K (English)
Individual evidence
- ↑ a b c d e f g 2MASS J15394189-0520428. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed October 12, 2019 .
- ↑ a b c d Joseph C. Filippazzo, Emily L. Rice, Jacqueline Faherty, Kelle L. Cruz, Mollie M. Van Gordon, Dagny L. Looper: Fundamental Parameters and Spectral Energy Distributions of Young and Field Age Objects with Masses Spanning the Stellar to Planetary Regime . In: The Astrophysical Journal . 810, No. 2, 2015, p. 158. arxiv : 1508.01767 . doi : 10.1088 / 0004-637X / 810/2/158 .