Identification Data |
Common Name | Yed Prior |
Constellation | Ophiuchus |
Star Name | 1del Oph |
Skymap Number | 16140066 |
Henry Draper (HD) Number | 146051 |
Harvard Revised (HR) Number | 6056 |
SAO Number | 141052 |
Durchmusterung (DM) Number | SD-03 3903 |
Washington Double Stars (WDS) Number
| 16143-0342
|
Positional Data |
Position and Proper Motion (PPM) Number | 199443 |
Right Ascension (RA) J2000 | 16h 14m 20.739s |
Declination (Dec) J2000 | -3° 41' 39.563" |
Position Uncertainty | 0.0126s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00306 |
Proper Motion in Dec (J2000) | -0.142966 |
Radial Velocity | -019.8km s-1 |
Trigonometric Parallax | +0.01916s |
Trigonometric Parallax Uncertainty | 0.00102s |
GCI Unit Vector in X (J2000) | -0.443923 |
GCI Unit Vector in Y (J2000) | -0.893745 |
GCI Unit Vector in Z (J2000) | -0.064433 |
Galactic Longitude | 8.85° |
Galactic Latitude
| 32.20°
|
Observational Data |
Observed Visual Magnitude (V) | 2.73 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
Observed B Magnitude | 4.31 |
Observed B-V Colour | +1.581 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.005 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 3.0 |
Observed Photographic Magnitude | 4.4 |
Morgan Keenan (MK) Spectral Type | M0.5III |
One-Dimensional Spectral Class | M0 |
Position Angle | 294 |
Year of Observation | 1908. AD |