2MASS J16580380 + 7027015
|
L-dwarf 2MASS J16580380 + 7027015 |
|||||
|---|---|---|---|---|---|
| AladinLite | |||||
|
Observation dates equinox : J2000.0 , epoch : J2000.0 |
|||||
| Constellation | Dragon | ||||
| Right ascension | 16 h 58 m 3.8 s | ||||
| declination | + 70 ° 27 ′ 1.7 ″ | ||||
| Typing | |||||
|
rel. Brightness (G-band) |
(18.11 ± 0.01) mag | ||||
| rel. Brightness (J-band) |
(13.29 ± 0.02) mag | ||||
| Spectral class | L1 | ||||
| Astrometry | |||||
| Radial velocity | (-25.60 ± 0.12) km / s | ||||
| parallax | (54.12 ± 0.21) mas | ||||
| distance | (60.24 ± 0.24) Lj (18.48 ± 0.07) pc |
||||
| Proper movement | |||||
| Rec. Share: | (−139.54 ± 0.31) mas / a | ||||
| Dec. portion: | (−315.38 ± 0.37) mas / a | ||||
| Physical Properties | |||||
| Dimensions | (0.07 ± 0.01) M ☉ | ||||
| radius | (0.10) R ☉ | ||||
| Luminosity |
(2.34 ± 0.06) × 10 −4 L ☉ |
||||
| Effective temperature | (2181 ± 62) K. | ||||
|
Other names and catalog entries |
|||||
|
|||||
2MASS J16580380 + 7027015 is a mutable L-dwarf in the constellation of Dragon . It was published in 2000 by John E. Gizis et al. discovered. It has a parallax of 54 milli-arcseconds, corresponding to a distance of 18.5 parsecs (60 light years). Due to its mass and radius, the object is on the border between red and brown dwarf .
swell
- Entry at DwarfArchives.org (English)
- Discovery paper: bibcode : 2000AJ .... 120.1085G (English)
Individual evidence
- ↑ a b c d e f g 2MASSI J1658037 + 702701. 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 .