| Identification Data |
| Common Name | |
| Constellation | Ophiuchus |
| Star Name | 20 Oph |
| Skymap Number | 16490145 |
| Henry Draper (HD) Number | 151769 |
| Harvard Revised (HR) Number | 6243 |
| SAO Number | 160118 |
| Durchmusterung (DM) Number | SD-10 4394 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 232206 |
| Right Ascension (RA) J2000 | 16h 49m 50.028s |
| Declination (Dec) J2000 | -10° 46' 58.799" |
| Position Uncertainty | 0.0248s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.00636 |
| Proper Motion in Dec (J2000) | -0.081966 |
| Radial Velocity | -000.6km s-1 |
| Trigonometric Parallax | +0.02704s |
| Trigonometric Parallax Uncertainty | 0.00108s |
| GCI Unit Vector in X (J2000) | -0.296075 |
| GCI Unit Vector in Y (J2000) | -0.936663 |
| GCI Unit Vector in Z (J2000) | -0.187090 |
| Galactic Longitude | 8.04° |
Galactic Latitude
| 20.92°
|
| Observational Data |
| Observed Visual Magnitude (V) | 4.64 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
| Observed B Magnitude | 5.13 |
| Observed B-V Colour | +0.489 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.002 |
| Observed U Magnitude | |
| Observed U-B Colour | |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | |
| Observed Photovisual Magnitude | 4.7 |
| Observed Photographic Magnitude | 5.2 |
| Morgan Keenan (MK) Spectral Type | F7IV |
| One-Dimensional Spectral Class | F5 |
| Position Angle | |
| Year of Observation | AD |
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