Beta Sagittae

β Sagittae
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Sagitta
Right ascension 19h 41m 02.9393s[1]
Declination +17° 28′ 33.748″[1]
Apparent magnitude (V) 4.387[1]
Characteristics
Spectral type G8IIIa[1]
U−B color index +0.89[2]
B−V color index +1.05[2]
R−I color index +0.50[2]
Astrometry
Radial velocity (Rv) −22.4 ± 0.9[1] km/s
Proper motion (μ) RA: 9.06[1] mas/yr
Dec.: −33.90[1] mas/yr
Parallax (π) 6.99 ± 0.67[1] mas
Distance 470 ± 40 ly
(140 ± 10 pc)
Absolute magnitude (MV) −1.4[3]
Details
Radius 10[4] R
Rotational velocity (v sin i) ≤ 19[2] km/s
Other designations
β Sge, Beta Sagittae, Beta Sge, 6 Sagittae, 6 Sge, BD+17 4048, FK5 1513, GC 27236, HD 185958, HIP 96837, HR 7488, PPM 136766, SAO 105133.[1]
Database references
SIMBAD data

Beta Sagittae (Beta Sge, β Sagittae, β Sge) is a G-type giant star in the constellation of Sagitta.[1] It has an apparent visual magnitude of approximately 4.387.[1]

References

  1. ^ a b c d e f g h i j k * bet Sge -- Star, database entry, SIMBAD. Accessed on line October 13, 2010.
  2. ^ a b c d HR 7488, 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 October 13, 2010.
  3. ^ From apparent magnitude and parallax.
  4. ^ HD 185958, 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 October 13, 2010.