Identification Data |
Common Name | |
Constellation | Aquila |
Star Name | 71 Aql |
Skymap Number | 20380073 |
Henry Draper (HD) Number | 196574 |
Harvard Revised (HR) Number | 7884 |
SAO Number | 144649 |
Durchmusterung (DM) Number | BD-01 4016 |
Washington Double Stars (WDS) Number
| 20383-0106
|
Positional Data |
Position and Proper Motion (PPM) Number | 181050 |
Right Ascension (RA) J2000 | 20h 38m 20.282s |
Declination (Dec) J2000 | -1° 6' 18.435" |
Position Uncertainty | 0.0132s |
Proper Motion in RA (J2000)/cos(Dec) | +0.00104 |
Proper Motion in Dec (J2000) | -0.017066 |
Radial Velocity | -005.6km s-1 |
Trigonometric Parallax | +0.00850s |
Trigonometric Parallax Uncertainty | 0.00100s |
GCI Unit Vector in X (J2000) | 0.637097 |
GCI Unit Vector in Y (J2000) | -0.770542 |
GCI Unit Vector in Z (J2000) | -0.019287 |
Galactic Longitude | 44.82° |
Galactic Latitude
| -24.14°
|
Observational Data |
Observed Visual Magnitude (V) | 4.31 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
Observed B Magnitude | 5.25 |
Observed B-V Colour | +0.936 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.003 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 4.5 |
Observed Photographic Magnitude | 5.4 |
Morgan Keenan (MK) Spectral Type | G7.5IIIa |
One-Dimensional Spectral Class | K0 |
Position Angle | 281 |
Year of Observation | 1914. AD |