Identification Data |
Common Name | |
Constellation | Aquila |
Star Name | 18 Aql |
Skymap Number | 19060223 |
Henry Draper (HD) Number | 178125 |
Harvard Revised (HR) Number | 7248 |
SAO Number | 104488 |
Durchmusterung (DM) Number | BD+10 3787 |
Washington Double Stars (WDS) Number
|
|
Positional Data |
Position and Proper Motion (PPM) Number | 135805 |
Right Ascension (RA) J2000 | 19h 6m 58.603s |
Declination (Dec) J2000 | +11° 4' 16.423" |
Position Uncertainty | 0.0085s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00002 |
Proper Motion in Dec (J2000) | -0.031567 |
Radial Velocity | -018.6km s-1 |
Trigonometric Parallax | +0.00643s |
Trigonometric Parallax Uncertainty | 0.00079s |
GCI Unit Vector in X (J2000) | 0.282737 |
GCI Unit Vector in Y (J2000) | -0.939779 |
GCI Unit Vector in Z (J2000) | 0.192029 |
Galactic Longitude | 44.55° |
Galactic Latitude
| 1.63°
|
Observational Data |
Observed Visual Magnitude (V) | 5.08 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
Observed B Magnitude | 5.02 |
Observed B-V Colour | -0.057 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.004 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 5.1 |
Observed Photographic Magnitude | |
Morgan Keenan (MK) Spectral Type | B8III |
One-Dimensional Spectral Class | B8 |
Position Angle | 304 |
Year of Observation | 1991. AD |