ζ2 Librae (abbreviated Zeta2 Librae, Zeta2 Lib, ζ2 Lib), also known as 33 Librae, is a variable star in the constellation Libra. It is approximately 261 light-years away from the Sun.[2]
  | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Libra |
| Right ascension | 15h 29m 34.7424s[1] |
| Declination | −17° 26′ 27.378″[1] |
| Apparent magnitude (V) | 6.69[1] |
| Characteristics | |
| Evolutionary stage | main sequence star |
| Spectral type | Ap |
| Variable type | α2 CVn |
| Astrometry | |
| Proper motion (μ) | RA: −68.387[1] mas/yr Dec.: 7.364[1] mas/yr |
| Parallax (π) | 12.6122 ± 0.0334 mas[1] |
| Distance | 258.6 ± 0.7 ly (79.3 ± 0.2 pc) |
| Details | |
| Mass | 1.77 M☉ |
| Radius | 1.97 R☉ |
| Luminosity | 10.473 L☉ |
| Temperature | 7406 K |
| Age | 1.096 Gyr |
| Other designations | |
GSC 06188-01530, HD 137949, BD-16 4093, SAO 159292, HIP 75848, 2MASS J15293475-1726274, GC 20814, GCRV 8945, HIC 75848, NSV 7104, PPM 230311, SRS 12967, TD1 18282, TYC 6188-1520-1, UBV 13283, UBV M 20794, uvby98 100137949 V, GZ Lib, WDS J15296-1726A, YZ 107 5681, uvby98 100137949, Gaia DR1 6258378300780159232, WEB 12909, Gaia DR2 6258378305082833408, ζ2 Lib, GEN# +1.00137949, SKY# 28036, Renson 39240, UC 2014A, 33 Lib | |
| Database references | |
| SIMBAD | data |
Zeta2 Librae does not have an HR number, although it is included in the Bright Star Catalogue Supplement.[3][4]
Characteristics
33 Librae is an F-type main sequence star.[2] It is an α2 Canum Venaticorum variable[2] or a rapidly oscillating Ap star, thus it bears the variable star designation GZ Librae and is almost 14 times brighter than the Sun.[6]
See also
References
Wikiwand in your browser!
Seamless Wikipedia browsing. On steroids.
Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.
Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.
