HD 191984
From Infogalactic: the planetary knowledge core
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Aquila |
| Right ascension | 20h 12m 35.12436s[1] |
| Declination | +00° 52′ 01.3864″[1] |
| Apparent magnitude (V) | 6.246[2] |
| Characteristics | |
| Spectral type | B9p CR(EU SR)[3] + A0[4] |
| U−B color index | −0.033[2] |
| B−V color index | +0.090[2] |
| Astrometry | |
| Radial velocity (Rv) | −19[5] km/s |
| Proper motion (μ) | RA: +2.12[1] mas/yr Dec.: −20.85[1] mas/yr |
| Parallax (π) | 5.54 ± 1.10 mas |
| Distance | approx. 600 ly (approx. 180 pc) |
| Details | |
| Luminosity | 82[6] L☉ |
| Temperature | 8,477[6] K |
| Rotational velocity (v sin i) | 150[7] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Database references | |
| SIMBAD | data |
HD 191984 is a double star in the equatorial constellation of Aquila. As of 2011, the components have an angular separation of 2.52″ along a position angle of 205.7°.[8]
References
- ↑ 1.0 1.1 1.2 1.3 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 2.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 6.0 6.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
External links
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