![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/e/e9/A_Hubble_gem_-_the_Jewel_Box.jpg/640px-A_Hubble_gem_-_the_Jewel_Box.jpg&w=640&q=50)
Kappa Crucis (star)
Star in the constellation Crux / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about Kappa Crucis (star)?
Summarize this article for a 10 year old
SHOW ALL QUESTIONS
Kappa Crucis (κ Cru, HD 111973) is a spectroscopic binary star in the open cluster NGC 4755, which is also known as the Kappa Crucis Cluster or Jewel Box Cluster.
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Crux |
Right ascension | 12h 53m 48.91920s[1] |
Declination | −60° 22′ 34.4808″[1] |
Apparent magnitude (V) | 5.98[2] |
Characteristics | |
Spectral type | B3Ia[3] |
U−B color index | −0.58[2] |
B−V color index | +0.22[2] |
Astrometry | |
Radial velocity (Rv) | -3.5[4] km/s |
Proper motion (μ) | RA: −5.046[5] mas/yr Dec.: −1.093[5] mas/yr |
Parallax (π) | 0.4334 ± 0.0481 mas[5] |
Distance | approx. 7,500 ly (approx. 2,300 pc) |
Absolute magnitude (MV) | −7.1[6] |
Details[7] | |
Mass | 23.0 M☉ |
Luminosity | 151,000 L☉ |
Surface gravity (log g) | 2.25 cgs |
Temperature | 16,300 K |
Rotational velocity (v sin i) | 70 km/s |
Other designations | |
Database references | |
SIMBAD | data |
Close