| Identification Data |
| Common Name | |
| Constellation | Ophiuchus |
| Star Name | 40xi Oph |
| Skymap Number | 17200198 |
| Henry Draper (HD) Number | 156897 |
| Harvard Revised (HR) Number | 6445 |
| SAO Number | 185296 |
| Durchmusterung (DM) Number | SD-20 4731 |
Washington Double Stars (WDS) Number
| 17210-2107
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 266721 |
| Right Ascension (RA) J2000 | 17h 21m 0.374s |
| Declination (Dec) J2000 | -21° 6' 46.557" |
| Position Uncertainty | 0.0123s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.01872 |
| Proper Motion in Dec (J2000) | -0.204766 |
| Radial Velocity | -008.8km s-1 |
| Trigonometric Parallax | +0.05748s |
| Trigonometric Parallax Uncertainty | 0.00093s |
| GCI Unit Vector in X (J2000) | -0.157956 |
| GCI Unit Vector in Y (J2000) | -0.919402 |
| GCI Unit Vector in Z (J2000) | -0.360207 |
| Galactic Longitude | 3.60° |
Galactic Latitude
| 8.92°
|
| Observational Data |
| Observed Visual Magnitude (V) | 4.39 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | |
| Observed B Magnitude | 4.78 |
| Observed B-V Colour | +0.394 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.019 |
| Observed U Magnitude | |
| Observed U-B Colour | |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | |
| Observed Photovisual Magnitude | 3.9 |
| Observed Photographic Magnitude | 4.9 |
| Morgan Keenan (MK) Spectral Type | F1III-IV |
| One-Dimensional Spectral Class | F5 |
| Position Angle | 44 |
| Year of Observation | 1966. AD |
