- Beta Lacertae
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β Lacertae Observation data
Epoch J2000.0 Equinox J2000.0 (ICRS)Constellation Lacerta Right ascension 22h 23m 33.6235s[1] Declination +52° 13′ 44.567″[1] Apparent magnitude (V) 4.43[1] Characteristics Spectral type G8.5IIIb[1] U−B color index +0.77[2] B−V color index +1.02[2] V−R color index 0.6[1] R−I color index +0.57[2] Astrometry Radial velocity (Rv) −10.4 ± 0.9[1] km/s Proper motion (μ) RA: −13.56[1] mas/yr
Dec.: −186.37[1] mas/yrParallax (π) 19.21 ± 0.51[1] mas Distance 170 ± 5 ly
(52 ± 1 pc)Absolute magnitude (MV) 0.85[3] Details Radius 5.8[4] R☉ Rotational velocity (v sin i) < 17[2] km/s Other designations Database references SIMBAD data Beta Lacertae (Beta Lac, β Lacertae, β Lac) is the fourth brightest star in the constellation of Lacerta. It is a G-type giant with an apparent visual magnitude of approximately 4.43.[1]
References
- ^ a b c d e f g h i j k NLTT 53741 -- High proper-motion Star, database entry, SIMBAD. Accessed on line November 17, 2008.
- ^ a b c d HR 8538, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line November 17, 2008.
- ^ From apparent magnitude and parallax.
- ^ HD 212496, database entry, Catalog of Apparent Diameters and Absolute Radii of Stars (CADARS), 3rd edition, L. E. Pasinetti-Fracassini, L. Pastori, S. Covino, and A. Pozzi, CDS ID II/224. Accessed on line November 17, 2008.
Bayer α • βFlamsteed Nearby Categories:- Lacerta constellation
- G-type giants
- Flamsteed objects
- Bayer objects
- Henry Draper Catalogue objects
- HIP objects
- Giant star stubs
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