| Identification Data |
| Common Name | Atlas |
| Constellation | Taurus |
| Star Name | 27 Tau |
| Skymap Number | 3490031 |
| Henry Draper (HD) Number | 23850 |
| Harvard Revised (HR) Number | 1178 |
| SAO Number | 76228 |
| Durchmusterung (DM) Number | BD+23 557 |
Washington Double Stars (WDS) Number
| 03492+2403
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 92934 |
| Right Ascension (RA) J2000 | 3h 49m 9.742s |
| Declination (Dec) J2000 | +24° 3' 12.296" |
| Position Uncertainty | 0.0104s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.00130 |
| Proper Motion in Dec (J2000) | -0.044766 |
| Radial Velocity | +008.5km s-1 |
| Trigonometric Parallax | +0.00857s |
| Trigonometric Parallax Uncertainty | 0.00103s |
| GCI Unit Vector in X (J2000) | 0.493455 |
| GCI Unit Vector in Y (J2000) | 0.768358 |
| GCI Unit Vector in Z (J2000) | 0.407588 |
| Galactic Longitude | 167.02° |
Galactic Latitude
| -23.23°
|
| Observational Data |
| Observed Visual Magnitude (V) | 3.63 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
| Observed B Magnitude | 3.55 |
| Observed B-V Colour | -0.077 |
| 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 | 3.8 |
| Observed Photographic Magnitude | |
| Morgan Keenan (MK) Spectral Type | B8III |
| One-Dimensional Spectral Class | B8 |
| Position Angle | |
| Year of Observation | 1929. AD |
