2MASS J15200224−4422419
| 2MASS J15200224−4422419 | |
|---|---|
|
Observation dates equinox : J2000.0 , epoch : J2000.0 |
|
| Constellation | wolf |
| Right ascension | 15 h 20 m 02.2 s |
| declination | −44 ° 22 ′ 41.9 ″ |
| Brightness (J-band) | common: (13.23 ± 0.03) mag |
| Spectral class |
A: L1.5 B: L4.5 |
| Astrometry | |
| Radial velocity | (−70 ± 18) km / s |
| distance | approx. (19 ± 2) pc |
| Proper movement : | |
| Relative self-movement | (0.73 ± 0.03) arcsec / a |
| Position angle | (239.9 ± 1.0) ° |
| Double system | |
| separation | 1 ", 174 ± 0", 016 (approx. (22 ± 2) AU) |
| Catalog entries | |
| DENIS-P J152002.2−442242 | |
2MASS J15200224−4422419 is a double system about 19 parsecs away consisting of two L-dwarfs in the constellation Wolf . The two objects, 2MASS J15200224−4422419 A and 2MASS J15200224−4422419 B , are separated by almost 2 arc seconds, which corresponds to a distance of about 22 AU. The spectral classes of the two components are estimated to be L1.5 and L4.5.
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- Burgasser et al .: Discovery of a High Proper Motion L Dwarf Binary: 2MASS J15200224−4422419AB ; in: The Astrophysical Journal, Vol. 658, No. 1, pp. 557ff. (2007), bibcode : 2007ApJ ... 658..557B