| Identification Data |
| Common Name | |
| Constellation | Coma Berenices |
| Star Name | 20 Com |
| Skymap Number | 12290083 |
| Henry Draper (HD) Number | 108765 |
| Harvard Revised (HR) Number | 4756 |
| SAO Number | 82336 |
| Durchmusterung (DM) Number | BD+21 2424 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 101938 |
| Right Ascension (RA) J2000 | 12h 29m 43.239s |
| Declination (Dec) J2000 | +20° 53' 45.992" |
| Position Uncertainty | 0.0090s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.00178 |
| Proper Motion in Dec (J2000) | -0.031366 |
| Radial Velocity | -005.km s-1 |
| Trigonometric Parallax | +0.01284s |
| Trigonometric Parallax Uncertainty | 0.00077s |
| GCI Unit Vector in X (J2000) | -0.926384 |
| GCI Unit Vector in Y (J2000) | -0.120812 |
| GCI Unit Vector in Z (J2000) | 0.356675 |
| Galactic Longitude | 263.34° |
Galactic Latitude
| 82.04°
|
| Observational Data |
| Observed Visual Magnitude (V) | 5.68 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.004 |
| Observed B Magnitude | 5.77 |
| Observed B-V Colour | +0.088 |
| 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 | 5.7 |
| Observed Photographic Magnitude | |
| Morgan Keenan (MK) Spectral Type | A3V |
| One-Dimensional Spectral Class | A2 |
| Position Angle | |
| Year of Observation | AD |
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