| Identification Data |
| Common Name | Algol |
| Constellation | Perseus |
| Star Name | 26bet Per |
| Skymap Number | 3080027 |
| Henry Draper (HD) Number | 19356 |
| Harvard Revised (HR) Number | 936 |
| SAO Number | 38592 |
| Durchmusterung (DM) Number | BD+40 673 |
Washington Double Stars (WDS) Number
| 03082+4057
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 45864 |
| Right Ascension (RA) J2000 | 3h 8m 10.131s |
| Declination (Dec) J2000 | +40° 57' 20.332" |
| Position Uncertainty | 0.0103s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.00021 |
| Proper Motion in Dec (J2000) | -0.001466 |
| Radial Velocity | +004.0km s-1 |
| Trigonometric Parallax | +0.03514s |
| Trigonometric Parallax Uncertainty | 0.00090s |
| GCI Unit Vector in X (J2000) | 0.514650 |
| GCI Unit Vector in Y (J2000) | 0.552710 |
| GCI Unit Vector in Z (J2000) | 0.655475 |
| Galactic Longitude | 148.98° |
Galactic Latitude
| -14.90°
|
| Observational Data |
| Observed Visual Magnitude (V) | 2.11 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.004 |
| Observed B Magnitude | 2.10 |
| Observed B-V Colour | -0.006 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.004 |
| Observed U Magnitude | |
| Observed U-B Colour | |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | |
| Observed Photovisual Magnitude | |
| Observed Photographic Magnitude | |
| Morgan Keenan (MK) Spectral Type | B8V |
| One-Dimensional Spectral Class | B8 |
| Position Angle | 155 |
| Year of Observation | 1924. AD |
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