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Zeta Librae

Location of ζ Librae (circled)
Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Libra
Right ascension	15 29 34.7424
Declination	−17° 26′ 27.378″
Apparent magnitude (V)	6.69
Characteristics
Evolutionary stage	main sequence star
Spectral type	Ap
Variable type	α CVn
Astrometry
Proper motion (μ)	RA: −68.387 mas/yr Dec.: 7.364 mas/yr
Parallax (π)	12.6122 ± 0.0334 mas
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, ζ Lib, GEN# +1.00137949, SKY# 28036, Renson 39240, UC 2014A, 33 Lib
Database references
SIMBAD	data

ζ Librae (abbreviated Zeta Librae, Zeta Lib, ζ Lib), also known as 33 Librae, is a variable star in the constellation Libra. It is approximately 261 light-years away from the Sun.

Zeta Librae does not have an HR number, although it is included in the Bright Star Catalogue Supplement.

Characteristics

33 Librae is an F-type main sequence star. It is an α Canum Venaticorum variable or a rapidly oscillating Ap star, thus it bears the variable star designation GZ Librae and is almost 14 times brighter than the Sun.

See also

• List of stars in Libra

References

1. ^ Gaia Collaboration (2020-11-01). "VizieR Online Data Catalog: Gaia EDR3 (Gaia Collaboration, 2020)". VizieR Online Data Catalog: I/350. Bibcode:2020yCat.1350....0G.
2. ^ "Universe Guide–ζ/33 Librae". Universe Guide. Retrieved 2023-11-19.
3. 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.
4. 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.
5. Wraight, K. T.; Fossati, L.; Netopil, M.; Paunzen, E.; Rode-Paunzen, M.; Bewsher, D.; Norton, A. J.; White, Glenn J. (February 2012). "A photometric study of chemically peculiar stars with the STEREO satellites - I. Magnetic chemically peculiar stars". Monthly Notices of the Royal Astronomical Society. 420 (1): 757–772. arXiv:1110.6283. Bibcode:2012MNRAS.420..757W. doi:10.1111/j.1365-2966.2011.20090.x.
6. Anderson, E.; Francis, C. (2012). "HIP 75848". Extended Hipparcos Compilation (XHIP). VizieR. Retrieved 2021-01-08.

v t e Constellation of Libra
List of stars in Libra Libra in Chinese astronomy
Stars	Bayer α α (Zubenelgenubi) β (Zubeneschamali) γ (Zubenelhakrabi) δ (Zuben Elakribi) ε ζ ζ ζ ζ η θ ι ι κ λ μ ν ξ ξ ο σ (Brachium) τ υ Flamsteed 2 3 4 5 10 11 12 16 17 18 22 23 26 28 30 36 37 41 42 47 48 49 50 30 Ser Variable HO KU KX HR 5455 HD 133112 133131 134439 134440 139139 140283 141569 141937 Other 2M1510 2MASS 1507−1627 Gliese 555 HE 1523-0901 WASP-57 WISE 1541−2250
Exoplanets 23 Librae b c γ Librae b c Gliese 581b c e WASP-189b
Star clusters NGC 5897
Galaxies	NGC 5605 5728 5792 5793 5861 5885 5890 5898 5917 Other AP IC 1059 IRAS 14348-1447 PKS 1510-089
Category

• Libra (constellation)
• F-type stars
• Alpha2 Canum Venaticorum variables
• Henry Draper Catalogue objects
• Hipparcos objects
• 2MASS objects
• Rapidly oscillating Ap stars