Eta Cygni
 Photo of Eta Cygni by MICROSOFT world wide telescope | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cygnus |
| Right ascension | 19h 56m 18.3719s[1] |
| Declination | +35° 05′ 00.325″[1] |
| Apparent magnitude (V) | 3.909[1] |
| Characteristics | |
| Spectral type | K0III[1] |
| U−B color index | +0.89[2] |
| B−V color index | +1.03[2] |
| Astrometry | |
| Radial velocity (Rv) | −26.5[1] km/s |
| Proper motion (μ) | RA: −34.00[1] mas/yr Dec.: −27.60[1] mas/yr |
| Parallax (π) | 23.40 ± 0.54[1] mas |
| Distance | 139 ± 3 ly (42.7 ± 1.0 pc) |
| Other designations | |
Eta Cygni (η Cyg) is a star in the constellation Cygnus. It is located about 137 light years from the Sun and is categorized as an orange giant star of spectral class K0III.[1]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 "Simbad Query Result: eta Cyg -- Star in double system". Centre de Données astronomiques de Strasbourg. Retrieved 2008-04-29.
- ↑ 2.0 2.1 Johnson, H. L.; Iriarte, B.; Mitchell, R. I.; Wisniewskj, W. Z. (1999). "UBVRIJKL photometry of the bright stars". Commission Lunar and Planetary Laboratory 4: 99. Bibcode:1966CoLPL...4...99J.
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