Omicron2 Cygni
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ο2 or 32 Cygni |
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| Observation data Epoch J2000 |
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|---|---|
| Constellation (pronunciation) |
Cygnus |
| Right ascension | 20h 15m 28.3216s |
| Declination | +47° 42' 51.15"' |
| Apparent magnitude (V) | 4.016 |
| Characteristics | |
| Spectral type | K3Ib+ / B3 |
| U-B color index | ? |
| B-V color index | ? |
| Variable type | None |
| Astrometry | |
| Radial velocity (Rv) | -14.4 km/s |
| Proper motion (μ) | RA: 3.88 mas/yr Dec.: 1.20 mas/yr |
| Parallax (π) | 2.94 ± 0.6 mas |
| Distance | approx. 1100 ly (approx. 340 pc) |
| Absolute magnitude (MV) | 5.495 |
| Details | |
| Mass | 9.7 / 5 M☉ |
| Radius | 115 / 1.525 R☉ |
| Luminosity | 11.100 L☉ |
| Temperature | ? K |
| Metallicity | ? |
| Rotation | ? |
| Age | < 20 million years |
| Visual binary orbit | |
| Companion | ο2 B |
| Period (P) | 3.143 yr |
| Semimajor axis (a) | 0" |
| Eccentricity (e) | 0 |
| Inclination (i) | 0° |
| Longitude of the node (Ω) | 0° |
| Periastron epoch (T) | 0 |
| Other designations | |
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IRC +50322, TYC 3576-2157-1, 32 Cyg, JP11 3209, UBV M 24687, omi02 Cyg, GSC 03576-02157, PLX 4826, AG+47° 1545, HD 192909, PPM 59586, BD+47° 3059, HD 192910, RAFGL 2540, BDS 10060 A, HIC 99848, ROT 2949, V* V1488 Cyg, CCDM J20155+4742A, HIP 99848, SAO 49385, AAVSO 2012+47, CEL 5001, HR 7751, SBC7 797, GC 28160, GCRV 12638, IRAS 20139+4733, TD1 26409.
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| Database references | |
| SIMBAD | data |
ο2 or 32 Cyg is an eclipsing binary of the Algol type. A red giant or supergiant is orbited by a blue star.
[edit] Reference
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