| Identification Data |
| Common Name | |
| Constellation | Coma Berenices |
| Star Name | 40 Com |
| Skymap Number | 13060051 |
| Henry Draper (HD) Number | 113866 |
| Harvard Revised (HR) Number | 4949 |
| SAO Number | 82651 |
| Durchmusterung (DM) Number | BD+23 2538 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 102380 |
| Right Ascension (RA) J2000 | 13h 6m 22.603s |
| Declination (Dec) J2000 | +22° 36' 58.273" |
| Position Uncertainty | 0.0109s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.00215 |
| Proper Motion in Dec (J2000) | -0.042766 |
| Radial Velocity | -005.1km s-1 |
| Trigonometric Parallax | +0.00570s |
| Trigonometric Parallax Uncertainty | 0.00119s |
| GCI Unit Vector in X (J2000) | -0.884656 |
| GCI Unit Vector in Y (J2000) | -0.263630 |
| GCI Unit Vector in Z (J2000) | 0.384556 |
| Galactic Longitude | 340.67° |
Galactic Latitude
| 84.36°
|
| Observational Data |
| Observed Visual Magnitude (V) | 5.64 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.018 |
| Observed B Magnitude | 7.07 |
| Observed B-V Colour | +1.432 |
| 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 | 5.9 |
| Observed Photographic Magnitude | 7.5 |
| Morgan Keenan (MK) Spectral Type | M5III |
| One-Dimensional Spectral Class | M0 |
| Position Angle | |
| Year of Observation | AD |
