Also known as η Cen, η Centauri, HD 127972, HD 127973, HIP 71352, HIC 71352, HR 5440, eta Cen
star in the constellation Centaurus
In the Vinony graph
Within Vinony's link graph, 庫樓二 is referenced by 255 other articles, and connects out to Alpha Centauri, year and Centaurus.
Vinony files it under Bayer objects, Be stars and Brightest stars.
Its subject is documented across 23 Wikipedia language editions.
Astronomical data · SIMBAD
- Object type
- Be*
- Spectral type
- B2Ve
- Distance
- 306 light-years
- Redshift
- z = 0
- Coordinates
- RA 218.8768° · Dec -42.1578°
View on SIMBAD →
via SIMBAD · CDS Strasbourg
Wikidata facts
- Instance of
- eruptive variable star
- Constellation
- Centaurus
- Radius
- 5.34
- Variable-star type
- Lambda Eridani variable
Show 15 more facts
- spectral class
- B3VE,N,COMP
- catalog code
- ALS 15000
- stellar rotational velocity
- 240
- absolute magnitude
- -2.53
- apparent magnitude
- 2.96
- right ascension
- 218.87676733750
- declination
- -42.15782521722
- effective temperature
- 21000
- parallax
- 10.67
- radial velocity
- -86.8
- epoch
- J2000.0
- surface gravity
- 9000
- luminosity
- 8700
- right ascension component of proper motion
- -38
- declination component of proper motion
- -27
Sources (2)
via Wikidata · CC0
Article · 中文
库楼二（η Cen /半人马座η ）是半人马座的一颗恒星。它转速极快，自转周期小于一天。 库楼二是一颗Be型星，即它的氢谱线的辐射是变化的，所以库楼二的亮度也稍微变化，被归类为仙后座γ变星。库楼二距离地球大约309光年。库楼二的质量很大，处于进化为白矮星及超新星的界线上。
Abstract from DBpedia / Wikipedia · CC BY-SA
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