Beta Equulei
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Equuleus |
| Right ascension | 21h 22m 53.6127s[1] |
| Declination | +06° 48′ 40.106″[1] |
| Apparent magnitude (V) | 5.159[1] |
| Characteristics | |
| Spectral type | A3V[1] |
| U−B color index | +0.07[2] |
| B−V color index | +0.05[2] |
| Astrometry | |
| Radial velocity (Rv) | −11.1 ± 0.9[1] km/s |
| Proper motion (μ) | RA: 52.66[1] mas/yr Dec.: 11.15[1] mas/yr |
| Parallax (π) | 9.06 ± 0.88[1] mas |
| Distance | 360 ± 30 ly (110 ± 10 pc) |
| Absolute magnitude (MV) | −0.1[3] |
| Details | |
| Radius | 1.5[4] R☉ |
| Rotational velocity (v sin i) | 78[2] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
Beta Equulei (Beta Equ, β Equulei, β Equ) is an A-type main sequence star in the constellation of Equuleus.[2] It has an overall apparent visual magnitude of approximately 5.159.[1]
β Equulei has four optical visual companions. They are not physically related to the star described above.[2]
References
- 1 2 3 4 5 6 7 8 9 10 * bet Equ -- Star in double system, database entry, SIMBAD. Accessed on line September 10, 2008.
- 1 2 3 4 5 HR 8178, 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 September 10, 2008.
- ↑ From apparent magnitude and parallax.
- ↑ HD 203562, 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 September 10, 2008.
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