Astronomy:Zeta2 Librae
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Short description: Alpha2 Canum Venaticorum variable in Libra
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| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Libra |
| Right ascension | 15h 29m 34.78s |
| Declination | −17° 26′ 37.4″ |
| Apparent magnitude (V) | 6.69 |
| Characteristics | |
| Evolutionary stage | main sequence star |
| Spectral type | Ap |
| Variable type | α2 CVn |
| Astrometry | |
| Proper motion (μ) | RA: 6 ± 0.34 mas/yr Dec.: -66.7 ± 0.67 mas/yr |
| Parallax (π) | 11.28 mas |
| 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 | |
ζ2 Librae (abbreviated Zeta2 Librae, Zeta2 Lib, ζ2 Lib) is a variable star in the constellation Libra. It is approximately 261 light-years away from the Sun.[1]
Zeta2 Librae does not have an HR number, although it is included in the Bright Star Catalogue Supplement.[2][3]
Characteristics
33 Librae is an F-type main sequence star.[1] It is an α2 Canum Venaticorum variable[1] or a rapidly oscillating Ap star, thus it bears the variable star designation GZ Librae and is almost 14 times brighter than the Sun.[4]
See also
References
- ↑ 1.0 1.1 1.2 1.3 "Universe Guide–ζ2/33 Librae". https://www.universeguide.com/star/75848/33librae.
- ↑ Hoffleit, D.; Warren, W. H. (1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)". VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H 5050. Bibcode: 1995yCat.5050....0H.
- ↑ Hoffleit, D.; Jaschek, C. (1982). "The Bright Star Catalogue. Fourth revised edition. (Containing data compiled through 1979)". The Bright Star Catalogue. Fourth Revised Edition. (Containing Data Compiled Through 1979). Bibcode: 1982bsc..book.....H.
- ↑ 4.0 4.1 Anderson, E.; Francis, C. (2012). "HIP 75848" (in en). Extended Hipparcos Compilation (XHIP). VizieR. http://vizier.u-strasbg.fr/viz-bin/VizieR-5?-ref=VIZ536795dd154a&-out.add=.&-source=V/137D/xhip&recno=75602.
Coordinates: 
15h 29m 34s, 742-17° 26′ 27″
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