Stephenson 2-18
|
Star Stephenson 2-18 |
|||
|---|---|---|---|
|
|||
| Image taken in 2003 by Stephenson 2-18 | |||
| AladinLite | |||
|
Observation dates equinox : J2000.0 , epoch : J2000.0 |
|||
| Constellation | sign | ||
| Right ascension | 18 h 39 m 2.37 s | ||
| declination | −06 ° 05 ′ 10.5 ″ | ||
| Typing | |||
| Astrometry | |||
| parallax | -0.0081 mas | ||
| distance | 20,000 ly 6,000 pc |
||
| Physical Properties | |||
| radius | 2158 R ☉ | ||
| Luminosity |
440000 L ☉ |
||
| Effective temperature | 3200 K | ||
|
Other names and catalog entries |
|||
|
|||
Stephenson 2-18 is a red supergiant that is currently one of the largest known stars . It is located in the star cluster Stephenson 2 about 20,000 light years away in the constellation Shield . Its radius is estimated to be 2158 times that of the Sun , which is roughly 10 billion times the volume.
See also
Individual evidence
- ↑ Gaia Collaboration, AGA Brown, A. Vallenari, T. Prusti, JHJ de Bruijne: Gaia Data Release 2. Summary of the contents and survey properties . In: Astronomy & Astrophysics . tape 616 , August 2018, ISSN 0004-6361 , p. A1 , doi : 10.1051 / 0004-6361 / 201833051 , arxiv : 1804.09365 .
- ^ Cl * Stephenson 2 DFK 1. In: Simbad. Retrieved June 21, 2020 .
- ↑ Thomas KT Fok, Jun-ichi Nakashima, Bosco HK Yung, Chih-Hao Hsia, Shuji Deguchi: Maser Observations of Westerlund 1 and Comprehensive Considerations on Maser Properties of Red Supergiants Associated with Massive Clusters . In: The Astrophysical Journal . tape 760 , no. 1 , November 20, 2012, ISSN 0004-637X , p. 65 , doi : 10.1088 / 0004-637X / 760/1/65 , arxiv : 1209.6427 .