62 Sagittarii
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| 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 | |
| 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
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 V* V3872 Sgr -- Pulsating variable Star, database entry, SIMBAD. Accessed on line November 19, 2009.
- ↑ 2.0 2.1 2.2 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.
- ↑ 3.0 3.1 3.2 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.
- ↑ From apparent magnitude and parallax.
- ↑ 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.
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