V1331 Cygni
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Star V1331 Cygni |
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| V1331 Cygni and the surrounding reflection nebula captured by the Hubble Space Telescope | |||
| AladinLite | |||
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Observation dates equinox : J2000.0 , epoch : J2000.0 |
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| Constellation | swan | ||
| Right ascension | 21 h 01 m 9.2 s | ||
| declination | + 50 ° 21 ′ 45 ″ | ||
| Apparent brightness | 11.99 (10.59 to 13.08) mag | ||
| Typing | |||
| B − V color index | (1.10) | ||
| U − B color index | (0.28) | ||
| Spectral class | F0 / F4-G5 | ||
| Astrometry | |||
| parallax | (1.68 ± 0.02) mas | ||
| distance | (1940 ± 25) ly (595) pc |
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| Proper movement | |||
| Rec. Share: | (0.98 ± 0.05) mas / a | ||
| Dec. portion: | (−3.78 ± 0.04) mas / a | ||
| Physical Properties | |||
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Other names and catalog entries |
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V1331 Cygni is a variable star in the constellation Swan . The star is surrounded by a dust ring about 30 arcseconds in diameter and, as images from the Hubble Space Telescope show, a narrower one with 13 arcseconds; it is at the tip of the dark cloud LDN 981. The star is almost 2000 light years away, is still very young and is not yet on the main sequence .
Web links
Individual evidence
- ↑ a b c d e f g EM * LkHA 120. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed September 10, 2018 .
- ↑ V1331 Cyg. In: VSX. AAVSO, accessed September 10, 2018 .
- ↑ SP Quanz, D. Apai, Th. Henning: Dust Rings and Filaments around the Isolated Young Star V1331 Cygni , bibcode : 2007ApJ ... 656..287Q