HD 173780
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| Observation data Epoch J2000.0 |
|
|---|---|
| Constellation (pronunciation) |
Lyra |
| Right ascension | 18h 46m 04.4803s |
| Declination | +26° 39' 43.667" |
| Apparent magnitude (V) | 4.833 |
| Characteristics | |
| Spectral type | K3III |
| U-B color index | +1.22 |
| B-V color index | +1.20 |
| Astrometry | |
| Radial velocity (Rv) | -16.7 km/s |
| Proper motion (μ) | RA: 18.68 mas/yr Dec.: 24.39 mas/yr |
| Parallax (π) | 12.96 ± 0.54 mas |
| Distance | 250 ± 10 ly (77 ± 3 pc) |
| Other designations | |
HD 173780 is a 5th magnitude star in the constellation Lyra, approximately 250 light years away from Earth. It is an orange giant star of the spectral type K3III, meaning it has a surface temperature of 3,500 to 5,000 kelvins. It is much bigger and brighter than our Sun, yet cooler.[1]
[edit] References
- ^ a b Simbad Query Result. Simbad. Retrieved on October 15, 2007.
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