Image by Danielboos on Pixabay · Pixabay License
Wikidata facts
- Constellation
- Perseus
- Distance from Earth
- 107.011
- Diameter
- 5250000
- Radius
- 2.75
- Mass
- 3.57
- Variable-star type
- Alpha² Canum Venaticorum variable
Show 15 more facts
- spectral class
- B9PSI
- catalog code
- Renson 4560
- stellar rotational velocity
- 24.3
- apparent magnitude
- 5.088136
- effective temperature
- 11200
- metallicity
- -0.12
- surface gravity
- 1000
- parallax
- 9.3448
- radial velocity
- 9.8
- epoch
- J2000.0
- absolute magnitude
- 0.14
- right ascension component of proper motion
- 1.79
- declination component of proper motion
- -30.088
- right ascension
- 44.32200717365
- declination
- 31.93422041616
Sources (1)
via Wikidata · CC0
Article · 中文
英仙座21，又名BD+31 509，HD 18296、SAO 56031、HR 873，是英仙座的一颗恒星，视星等为5.11，位于銀經151.88，銀緯-23.77，其B1900.0坐标为赤經2h 51m 12.9s，赤緯+31° -23.77′ 54″。
Abstract from DBpedia / Wikipedia · CC BY-SA