2MASS J16262034 + 3925190
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Star J16262034 + 3925190 |
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| AladinLite | |||
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Observation dates equinox : J2000.0 , epoch : J2000.0 |
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| Constellation | Hercules | ||
| Right ascension | 16 h 26 m 20.13 s | ||
| declination | + 39 ° 25 ′ 19.5 ″ | ||
| Typing | |||
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rel. Brightness (G-band) |
(18.38 ± 0.01) mag | ||
| rel. Brightness (J-band) |
(14.44 ± 0.03) mag | ||
| R − I index | (2.99) | ||
| Spectral class | sdL4 | ||
| Astrometry | |||
| parallax | (32.49 ± 0.23) mas | ||
| distance | (100 ± 1) Lj (30.78 ± 0.22) pc |
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| Proper movement | |||
| Rec. Share: | (−1374.66 ± 0.35) mas / a | ||
| Dec. portion: | (237.36 ± 0.44) mas / a | ||
| Physical Properties | |||
| Dimensions | (0.07 ± 0.01) M ☉ | ||
| radius | (0.10) R ☉ | ||
| Luminosity |
(1.95 ± 0.14) × 10 −4 L ☉ |
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| Effective temperature | (2103 ± 75) K. | ||
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Other names and catalog entries |
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2MASS J16262034 + 3925190 , also short 2MASS 1626 + 3925 , is an L-subdwarf in the constellation Hercules . It was identified in the data from the Two Micron All Sky Survey (Burgasser, 2004) and is about 100 light years away . Due to its mass and radius, the object is on the border between red and brown dwarf . The classification as a sub-dwarf suggests an unusual metallicity . Furthermore, the object shows a relatively high level of movement .
swell
- Adam J. Burgasser: Discovery of a Second L Subdwarf in the Two Micron All Sky Survey . In: The Astrophysical Journal . Vol. 614, No. 1, pp. L73-L76 (2004). bibcode : 2004ApJ ... 614L..73B
- Schilbach et al .: Trigonometric parallaxes of ten ultracool subdwarfs . In: Astronomy and Astrophysics . Vol. 493, No. 2, pp. L27-L30 (2009). bibcode : 2009A & A ... 493L..27S
Individual evidence
- ↑ a b c d e f g J16262034 + 3925190. 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 .