HD 180555
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| Observation data Epoch J2000 Equinox J2000 |
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|---|---|
| Constellation | Aquila |
| Right ascension | 19h 16m 26.7881s |
| Declination | +14° 32′ 40.616″ |
| Apparent magnitude (V) | 5.63 |
| Characteristics | |
| Spectral type | B9.5V |
| U−B color index | -0.16 |
| B−V color index | -0.02 |
| Astrometry | |
| Radial velocity (Rv) | -19.3 km/s |
| Proper motion (μ) | RA: 9.15 mas/yr Dec.: 0.22 mas/yr |
| Parallax (π) | 8.77 ± 1.17 mas |
| Distance | approx. 370 ly (approx. 110 pc) |
| Absolute magnitude (MV) | 5.61 |
| Details | |
| Mass | 18 M☉ |
| Radius | 7 R☉ |
| Luminosity | 20,000 L☉ |
| Temperature | 10,000–30,000 K |
| Rotational velocity (v sin i) | 147 km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
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HD 180555 is a star is a double system.
[edit] References
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