HD 194244
From Infogalactic: the planetary knowledge core
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Aquila |
| Right ascension | 20h 24m 37.49846s[1] |
| Declination | +01° 04′ 06.2592″[1] |
| Apparent magnitude (V) | 6.14[2] |
| Characteristics | |
| Spectral type | B9V[3] |
| U−B color index | −0.14[2] |
| B−V color index | −0.04[2] |
| Astrometry | |
| Radial velocity (Rv) | −9.6±0.9[4] km/s |
| Proper motion (μ) | RA: +8.37[1] mas/yr Dec.: +5.26[1] mas/yr |
| Parallax (π) | 4.04 ± 0.39[1] mas |
| Distance | 810 ± 80 ly (250 ± 20 pc) |
| Details | |
| Luminosity | 173[5] L☉ |
| Temperature | 8,822[5] K |
| Rotational velocity (v sin i) | 222[6] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
|
HD 194244 is a variable Be star[7] in the equatorial constellation of Aquila. With an apparent magnitude of 6.14, according to the Bortle scale it is faintly visible to the naked eye from rural skies on a dark night.
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Lua error in package.lua at line 80: module 'strict' not found.Vizier catalog entry
- ↑ 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.
- ↑ 5.0 5.1 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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