Identification Data |
Common Name | |
Constellation | Ophiuchus |
Star Name | 51 Oph |
Skymap Number | 17310082 |
Henry Draper (HD) Number | 158643 |
Harvard Revised (HR) Number | 6519 |
SAO Number | 185470 |
Durchmusterung (DM) Number | CD-2313412 |
Washington Double Stars (WDS) Number
|
|
Positional Data |
Position and Proper Motion (PPM) Number | 266959 |
Right Ascension (RA) J2000 | 17h 31m 24.954s |
Declination (Dec) J2000 | -23° 57' 45.516" |
Position Uncertainty | 0.0085s |
Proper Motion in RA (J2000)/cos(Dec) | +0.00036 |
Proper Motion in Dec (J2000) | -0.025966 |
Radial Velocity | -012.0km s-1 |
Trigonometric Parallax | +0.00765s |
Trigonometric Parallax Uncertainty | 0.00087s |
GCI Unit Vector in X (J2000) | -0.113677 |
GCI Unit Vector in Y (J2000) | -0.906712 |
GCI Unit Vector in Z (J2000) | -0.406141 |
Galactic Longitude | 2.53° |
Galactic Latitude
| 5.34°
|
Observational Data |
Observed Visual Magnitude (V) | 4.80 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
Observed B Magnitude | 4.81 |
Observed B-V Colour | +0.013 |
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 | 4.8 |
Observed Photographic Magnitude | 4.9 |
Morgan Keenan (MK) Spectral Type | B9.5Ve |
One-Dimensional Spectral Class | A0 |
Position Angle | |
Year of Observation | AD |