Cyg OB2 -8A
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Cyg OB2-8A |
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| Observation data Epoch J2000 Equinox J2000 |
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|---|---|
| Constellation | Cygnus |
| Right ascension | 20h 33m 15.0789s |
| Declination | +41° 18' 50.494"' |
| Apparent magnitude (V) | 8.99 |
| Characteristics | |
| Spectral type | O6Ib/O5III |
| U−B color index | ? |
| B−V color index | ? |
| Variable type | Eclipsing binary |
| Astrometry | |
| Radial velocity (Rv) | -27.7 km/s |
| Proper motion (μ) | RA: -1.16 mas/yr Dec.: -4.05 mas/yr |
| Parallax (π) | -0.94 ± 1.91 mas |
| Distance | approx. −3,000 ly (approx. −1,000 pc) |
| Absolute magnitude (MV) | 10.08 |
| Details | |
| Mass | ? M☉ |
| Radius | 28 R☉ |
| Luminosity | 2.750.000 L☉ |
| Surface gravity (log g) | ? |
| Temperature | 48.000 K |
| Metallicity | ? |
| Rotation | ? |
| Age | 6.43 million years |
| Other designations | |
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VI CYG 8A, 1E 203127+4108.5, Hilt 996, TYC 3161-1325-1, ADS 14000 A, 2E 4382, HIP 101425, UBV 17839, AG+41° 1925, 2E 2031.4+4108, IDS 20297+4058, ALS 11423, EM* CDS 1173, LS III +41 37, Ass Cyg OB 2-8 A, 1ES 2031+41.1, 2MASS J20331508+4118504, BD+40° 4227, GCRV 20036, PPM 60129, CCDM J20332+4119A, 1RXS J203315.8+411848, CGO 605, GOS G080.22+00.79 01, SAO 49781, CSI+40 4227 1, GSC 03161-01325, Schulte 8A, CXOCyg J203315.07+411850.3, HIC 101425, Schulte 8.
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| Database references | |
| SIMBAD | data |
Cyg OB2-8A or TYC 3161-01325-1 is a eclipsing binary in Cyg OB2 Association.
HIC 101425 includes the components CCDM J20332+4119A, CCDM J20332+4119B, CCDM J20332+4119D and CCDM J20332+4119E.
[edit] References
[edit] External links
- Cyg OB2 -8A on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
Coordinates: 
20h 33m 15.0789s, +41° 18′ 50.494″
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