| Identification Data |
| Common Name | |
| Constellation | Eridanus |
| Star Name | 51 Eri |
| Skymap Number | 4370099 |
| Henry Draper (HD) Number | 29391 |
| Harvard Revised (HR) Number | 1474 |
| SAO Number | 131358 |
| Durchmusterung (DM) Number | SD-02 963 |
Washington Double Stars (WDS) Number
| 04376-0228
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 187138 |
| Right Ascension (RA) J2000 | 4h 37m 36.131s |
| Declination (Dec) J2000 | -2° 28' 24.774" |
| Position Uncertainty | 0.0089s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.00289 |
| Proper Motion in Dec (J2000) | -0.064266 |
| Radial Velocity | +021.0km s-1 |
| Trigonometric Parallax | +0.03360s |
| Trigonometric Parallax Uncertainty | 0.00091s |
| GCI Unit Vector in X (J2000) | 0.351505 |
| GCI Unit Vector in Y (J2000) | 0.935191 |
| GCI Unit Vector in Z (J2000) | -0.043158 |
| Galactic Longitude | 198.61° |
Galactic Latitude
| -30.66°
|
| Observational Data |
| Observed Visual Magnitude (V) | 5.22 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
| Observed B Magnitude | 5.51 |
| Observed B-V Colour | +0.286 |
| 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 | 5.5 |
| Observed Photographic Magnitude | 5.5 |
| Morgan Keenan (MK) Spectral Type | F0V |
| One-Dimensional Spectral Class | A5 |
| Position Angle | 79 |
| Year of Observation | 1963. AD |
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