NASA's Hubble Universe in 3-D · NASA · NASA — public domain
Also known as d Cen, HD 117440, HIP 65936, HIC 65936, HR 5089, TIC 461235343, TYC 7792-2393-1, NSV 6283
star in the constellation Centaurus
Astronomical data · SIMBAD
- Object type
- **
- Spectral type
- G8II/III
- Distance
- 906 light-years
- Redshift
- z = -0.000008005506240693627
- Coordinates
- RA 202.7611° · Dec -39.4073°
View on SIMBAD →
via SIMBAD · CDS Strasbourg
Wikidata facts
- Constellation
- Centaurus
- Radius
- 70.13
Show 14 more facts
- catalog code
- SKY# 24883
- spectral class
- G9Ib*
- apparent magnitude
- 1.32
- right ascension
- 202.76106914625
- declination
- -39.40730527556
- effective temperature
- 3907
- radial velocity
- -3.5
- parallax
- 2.60
- epoch
- J2000.0
- metallicity
- -0.36
- surface gravity
- 72
- different from
- D Centauri
- right ascension component of proper motion
- -9
- declination component of proper motion
- -14
Sources (3)
via Wikidata · CC0
Article · 中文
库楼五（HD 117440，半人马座d，d Cen）是半人马座的一个双星系统。距离地球约1250光年。 该双星系统的两颗成员星都是黄色G型亮巨星。主星半人马座d A的视星等为+4.5，而其伴星半人马座d B的视星等为+4.7。两颗恒星绕着它们公共的质量中心以78.7年的周期绕行，伴星的半长轴为0.165弧秒。两子星均比太阳大的多，质量各约为太阳的6.8和6.5倍，直径则是太阳的82和71倍。两子星辐射出的总光度各约为太阳的3500和2900倍.这对双星预计年龄不足1亿年，将继续朝赫罗图右上方演化，最后则会成为大质量的白矮星。
Abstract from DBpedia / Wikipedia · CC BY-SA