Phi Cygni
From Infogalactic: the planetary knowledge core
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Cygnus |
| Right ascension | 19h 39m 22.60591s [1] |
| Declination | 30° 09′ 11.9604″ [1] |
| Apparent magnitude (V) | 4.69 [2] |
| Characteristics | |
| Spectral type | G8III-IV [3] |
| B−V color index | +0.96 [2] |
| Astrometry | |
| Radial velocity (Rv) | +4.50[4] km/s |
| Proper motion (μ) | RA: +2.48[2] mas/yr Dec.: +36.50[2] mas/yr |
| Parallax (π) | 12.25 ± 0.24[1] mas |
| Distance | 266 ± 5 ly (82 ± 2 pc) |
| Absolute magnitude (MV) | 0.13 [5] |
| Details | |
| Radius | 7.80 [6] R☉ |
| Other designations | |
| Database references | |
| SIMBAD | data |
Phi Cygni (φ Cyg) is a class G8III[3] (yellow giant) star in the constellation Cygnus. Its apparent magnitude is 4.69[2] and it is approximately 266 light years away based on parallax.[1] It is a spectroscopic binary with two similar stars orbiting with a period of 434 days.[7][8]
References
- ↑ 1.0 1.1 1.2 1.3 Lua error in package.lua at line 80: module 'strict' not found. Vizier catalog entry
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 Lua error in package.lua at line 80: module 'strict' not found. Vizier catalog entry
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Absolute magnitude calculated as
, where 
is the star's absolute magnitude, 
is the star's apparent magnitude, and 
is the star's measured parallax in arcseconds. - ↑ Lua error in package.lua at line 80: module 'strict' not found. Vizier catalog entry
- ↑ Lua error in package.lua at line 80: module 'strict' not found. Vizier catalog entry
- ↑ Lua error in package.lua at line 80: module 'strict' not found. Vizier catalog entry
<templatestyles src="Asbox/styles.css"></templatestyles>
 |
This giant-star-related article is a stub. You can help Wikipedia by expanding it. |
