Global InformationHD 194244 information
| 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 mas[1] |
| 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 | |
BD+00° 4495, HD 194244, HIP 100664, HR 7803, SAO 125769. | |
| Database references | |
| SIMBAD | data |
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.
- ^ a b c d e Cite error: The named reference
van Leeuwen2007was invoked but never defined (see the help page). - ^ a b c Cite error: The named reference
mnassa23_175was invoked but never defined (see the help page). - ^ Cite error: The named reference
aj74_375was invoked but never defined (see the help page). - ^ Cite error: The named reference
Gontcharovwas invoked but never defined (see the help page). - ^ a b Cite error: The named reference
Mcdonaldwas invoked but never defined (see the help page). - ^ Cite error: The named reference
aaa463_2_671was invoked but never defined (see the help page). - ^ Cite error: The named reference
apjss156_2_237was invoked but never defined (see the help page).