| Identification Data |
| Common Name | |
| Constellation | Eridanus |
| Star Name | 1tau1Eri |
| Skymap Number | 2450018 |
| Henry Draper (HD) Number | 17206 |
| Harvard Revised (HR) Number | 818 |
| SAO Number | 148584 |
| Durchmusterung (DM) Number | SD-19 518 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 211940 |
| Right Ascension (RA) J2000 | 2h 45m 6.185s |
| Declination (Dec) J2000 | -18° 34' 21.225" |
| Position Uncertainty | 0.0081s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.02327 |
| Proper Motion in Dec (J2000) | +0.036366 |
| Radial Velocity | +025.6km s-1 |
| Trigonometric Parallax | +0.07156s |
| Trigonometric Parallax Uncertainty | 0.00076s |
| GCI Unit Vector in X (J2000) | 0.712404 |
| GCI Unit Vector in Y (J2000) | 0.625328 |
| GCI Unit Vector in Z (J2000) | -0.318505 |
| Galactic Longitude | 200.83° |
Galactic Latitude
| -62.53°
|
| Observational Data |
| Observed Visual Magnitude (V) | 4.47 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
| Observed B Magnitude | 4.95 |
| Observed B-V Colour | +0.483 |
| 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 | 4.6 |
| Observed Photographic Magnitude | 5.0 |
| Morgan Keenan (MK) Spectral Type | F6V |
| One-Dimensional Spectral Class | F5 |
| Position Angle | |
| Year of Observation | AD |
