4 Cygni
From Infogalactic: the planetary knowledge core
| Observation data Epoch J2000.0 Equinox J2000.0 |
|
|---|---|
| Constellation | Cygnus |
| Right ascension | 19h 26m 09.12723s |
| Declination | +36° 19' 04.43" |
| Characteristics | |
| Spectral type | B9sp I |
| U−B color index | -0.43 |
| B−V color index | -0.12 |
| Variable type | α2 CVn[2] |
| Astrometry | |
| Radial velocity (Rv) | -22 km/s |
| Proper motion (μ) | RA: 4.60 mas/yr Dec.: 13.58 mas/yr |
| Parallax (π) | 4.61 ± 0.62 mas |
| Distance | approx. 710 ly (approx. 220 pc) |
| Other designations | |
4 Cygni (4 Cyg) is a star in the constellation Cygnus, approximately 710 light years away from Earth.[1]
References
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