62 Sagittarii

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62 Sagittarii
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Sagittarius
Right ascension 20h 02m 39.4805s[1]
Declination −27° 42′ 35.441″[1]
Apparent magnitude (V) 4.45 to 4.64[2]
Characteristics
Spectral type M4III[1]
U−B color index +1.80[3]
B−V color index +1.65[3]
R−I color index +1.56[3]
Variable type LB[2]
Astrometry
Radial velocity (Rv) 9.9 ± 0.9[1] km/s
Proper motion (μ) RA: 32.28[1] mas/yr
Dec.: 14.35[1] mas/yr
Parallax (π) 7.28 ± 0.74[1] mas
Distance approx. 450 ly
(approx. 140 pc)
Absolute magnitude (MV) −1.1[4]
Details
Radius 70[5] R
Other designations
62 Sgr, c Sagittarii, c Sgr, V3872 Sagittarii, V3872 Sgr, CD−28 16355, CPD−28 7105, FK5 753, GC 27763, HD 189763, HIP 98688, HR 7650, PPM 270603, SAO 188844.[1]
Database references
SIMBAD data

62 Sagittarii (62 Sgr) or c Sagittarii (c Sgr) is an M-type giant star in the constellation of Sagittarius.[1] It is the southwest corner of the asterism called the Terebellum. It is an irregular variable whose apparent visual magnitude varies between 4.45 and 4.64,[2] and, at its brightest, it is the brightest of the four stars in the Terebellum. It is approximately 450 light-years from Earth.[1] 62 Sagittarii is the star in the Terebellum which is most distant from its centre; it is 1.72° from its northwest corner, 60 Sagittarii, and 1.37° from its southeast corner, 59 Sagittarii.

References[edit]

  1. ^ a b c d e f g h i j V* V3872 Sgr -- Pulsating variable Star, database entry, SIMBAD. Accessed on line November 19, 2009.
  2. ^ a b c V3872 Sgr, database entry, The combined table of GCVS Vols I-III and NL 67-78 with improved coordinates, General Catalogue of Variable Stars, Sternberg Astronomical Institute, Moscow, Russia. Accessed on line November 19, 2009.
  3. ^ a b c HR 7650, 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.
  4. ^ From apparent magnitude and parallax.
  5. ^ HD 189763, 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 19, 2009.