Epoch J2000.0 Equinox J2000.0 (ICRS)
|Right ascension||19h 56m 56.8312s|
|Declination||−27° 10′ 11.636″|
|Apparent magnitude (V)||4.544|
|U−B color index||+1.57|
|B−V color index||+1.46|
|R−I color index||+0.73|
|Radial velocity (Rv)||−16.2 ± 0.9 km/s|
|Proper motion (μ)||RA: 9.60 mas/yr
Dec.: −14.95 mas/yr
|Parallax (π)||2.70 ± 0.75 mas|
|Distance||approx. 1,200 ly
(approx. 400 pc)
|Absolute magnitude (MV)||−3.3|
59 Sagittarii (59 Sgr), also known by its Bayer designation b Sagittarii, is a K-type bright giant star in the constellation of Sagittarius. It has an apparent visual magnitude of approximately 4.544. 59 Sagittarii is the southeast corner of the asterism called the Terebellum and, at about 1200 light years from Earth, it is the farthest of the four stars in this asterism.
- * b Sgr -- Star, database entry, SIMBAD. Accessed on line November 19, 2009.
- Keenan, Philip C.; McNeil, Raymond C. (1989). "The Perkins catalog of revised MK types for the cooler stars". Astrophysical Journal Supplement Series. 71: 245. Bibcode:1989ApJS...71..245K. doi:10.1086/191373.
- HR 7604, 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 19, 2009.
- From apparent magnitude and parallax.
- HD 188603, database record, HD-DM-GC-HR-HIP-Bayer-Flamsteed Cross Index, N. D. Kostjuk, Institute of Astronomy of Russian Academy of Sciences, 2002; CDS ID IV/27. Accessed on line November 19, 2009.
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