| Identification Data |
| Common Name | Asellus Borealis |
| Constellation | Cancer |
| Star Name | 43gam Cnc |
| Skymap Number | 8430063 |
| Henry Draper (HD) Number | 74198 |
| Harvard Revised (HR) Number | 3449 |
| SAO Number | 80378 |
| Durchmusterung (DM) Number | BD+21 1895 |
Washington Double Stars (WDS) Number
| 08433+2128
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 98985 |
| Right Ascension (RA) J2000 | 8h 43m 17.146s |
| Declination (Dec) J2000 | +21° 28' 6.602" |
| Position Uncertainty | 0.0112s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.00766 |
| Proper Motion in Dec (J2000) | -0.039366 |
| Radial Velocity | +028.7km s-1 |
| Trigonometric Parallax | +0.02058s |
| Trigonometric Parallax Uncertainty | 0.00087s |
| GCI Unit Vector in X (J2000) | -0.608349 |
| GCI Unit Vector in Y (J2000) | 0.704246 |
| GCI Unit Vector in Z (J2000) | 0.365990 |
| Galactic Longitude | 204.17° |
Galactic Latitude
| 33.73°
|
| Observational Data |
| Observed Visual Magnitude (V) | 4.67 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
| Observed B Magnitude | 4.69 |
| Observed B-V Colour | +0.021 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.003 |
| Observed U Magnitude | |
| Observed U-B Colour | |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | |
| Observed Photovisual Magnitude | 4.7 |
| Observed Photographic Magnitude | |
| Morgan Keenan (MK) Spectral Type | A1IV |
| One-Dimensional Spectral Class | A0 |
| Position Angle | 67 |
| Year of Observation | 1984. AD |
