| Identification Data |
| Common Name | Achird |
| Constellation | Cassiopeia |
| Star Name | 24eta Cas |
| Skymap Number | 480139 |
| Henry Draper (HD) Number | 4614 |
| Harvard Revised (HR) Number | 219 |
| SAO Number | 21732 |
| Durchmusterung (DM) Number | BD+57 150 |
Washington Double Stars (WDS) Number
| 00491+5749
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 25718 |
| Right Ascension (RA) J2000 | 0h 49m 6.291s |
| Declination (Dec) J2000 | +57° 48' 54.674" |
| Position Uncertainty | 0.0055s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.13606 |
| Proper Motion in Dec (J2000) | -0.559767 |
| Radial Velocity | +009.km s-1 |
| Trigonometric Parallax | +0.16799s |
| Trigonometric Parallax Uncertainty | 0.00062s |
| GCI Unit Vector in X (J2000) | 0.520472 |
| GCI Unit Vector in Y (J2000) | 0.113255 |
| GCI Unit Vector in Z (J2000) | 0.846334 |
| Galactic Longitude | 122.61° |
Galactic Latitude
| -5.05°
|
| Observational Data |
| Observed Visual Magnitude (V) | 3.45 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.000 |
| Observed B Magnitude | 4.02 |
| Observed B-V Colour | +0.570 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.005 |
| Observed U Magnitude | 4.05 |
| Observed U-B Colour | +0.03 |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | 0.010 |
| Observed Photovisual Magnitude | 3.6 |
| Observed Photographic Magnitude | 4.1 |
| Morgan Keenan (MK) Spectral Type | F9V |
| One-Dimensional Spectral Class | F8 |
| Position Angle | 315 |
| Year of Observation | 1993. AD |
