HD 173417
HD 173417 is a 6th magnitude star in the constellation Lyra, approximately 169 light years away from Earth. It is a yellowish white giant or subgiant star of the spectral type F1III-IV. It therefore has a surface temperature of 6,000 to 7,500 kelvins and is hotter, larger, and several times brighter than our Sun.[1]
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Lyra |
| Right ascension | 18h 43m 51.5916s |
| Declination | +31° 55' 35.807" |
| Apparent magnitude (V) | 5.687 |
| Characteristics | |
| Spectral type | F1III-IV |
| U−B color index | +0.03 |
| B−V color index | +0.33 |
| Astrometry | |
| Radial velocity (Rv) | -2.3 km/s |
| Proper motion (μ) | RA: -33.00 mas/yr Dec.: -126.13 mas/yr |
| Parallax (π) | 19.27 ± 0.60 mas |
| Distance | 169 ± 5 ly (52 ± 2 pc) |
| Absolute magnitude (MV) | 1.81[2] |
| Details | |
| Temperature | 6,780[2] K |
| Rotational velocity (v sin i) | 53.9±2.7[2] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
References
- "Simbad Query Result". Simbad. Retrieved October 16, 2007.
- Reiners, A. (January 2006), "Rotation- and temperature-dependence of stellar latitudinal differential rotation", Astronomy and Astrophysics, 446 (1): 267–277, arXiv:astro-ph/0509399, Bibcode:2006A&A...446..267R, doi:10.1051/0004-6361:20053911.
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