SDSS J112118.57 + 433246.5
| SDSS J112118.57 + 433246.5 | |
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Observation dates equinox : J2000.0 , epoch : J2000.0 |
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| Constellation | Ursa Major |
| Right ascension | 11 h 21 m 18.6 s |
| declination | + 43 ° 32 ′ 47 ″ |
| Brightness (J-band) | (17.04 ± 0.05) mag |
| Spectral class | L7.5 |
| distance | (46 ± 6) pc (150 ± 20) ly |
| Catalog names | |
| 2MASS J11211858 + 4332464 | |
SDSS J112118.57 + 433246.5 is an unusually blue L-dwarf of the spectral class L7.5 (NIR) with strong absorption bands of H 2 O and FeH in its spectrum, which may indicate a low metallicity or a thin layer of condensed matter (" Clouds "). A spectrophotometric estimate of the distance of this object located in the constellation Ursa Major showed a distance of around 150 light years.
SDSS J112118.57 + 433246.5 was identified as a blue L-dwarf using data from the Sloan Digital Sky Survey (SDSS). The corresponding study by Chiu et al. was released in 2006.
literature
- Chiu et al .: Seventy-One New L and T Dwarfs from the Sloan Digital Sky Survey ; in: The Astronomical Journal 131 (5), pp. 2722–2736 (2006), bibcode : 2006AJ .... 131.2722C (English)