| Identification Data | 
| Common Name |  | 
| Constellation | Eridanus | 
| Star Name | 45    Eri | 
| Skymap Number | 4310121 | 
| Henry Draper (HD) Number | 28749 | 
| Harvard Revised (HR) Number | 1437 | 
| SAO Number | 131270 | 
| Durchmusterung (DM) Number | BD-00  713 | 
Washington Double Stars (WDS) Number
  | 
  | 
| Positional Data | 
| Position and Proper Motion (PPM) Number | 175558 | 
| Right Ascension (RA) J2000 | 4h 31m 52.667s | 
| Declination (Dec) J2000 | -0° 2' 38.440" | 
| Position Uncertainty | 0.0130s | 
| Proper Motion in RA (J2000)/cos(Dec) | -0.00025 | 
| Proper Motion in Dec (J2000) | -0.008266 | 
| Radial Velocity | +016.6km s-1 | 
| Trigonometric Parallax | +0.00393s | 
| Trigonometric Parallax Uncertainty | 0.00096s | 
| GCI Unit Vector in X (J2000) | 0.375101 | 
| GCI Unit Vector in Y (J2000) | 0.926984 | 
| GCI Unit Vector in Z (J2000) | -0.000768 | 
| Galactic Longitude | 195.34° | 
Galactic Latitude
  | -30.63°
  | 
| Observational Data | 
| Observed Visual Magnitude (V) | 4.90 | 
| Derived Visual Magnitude |  | 
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.005 | 
| Observed B Magnitude | 6.24 | 
| Observed B-V Colour | +1.335 | 
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.006 | 
| Observed U Magnitude |  | 
| Observed U-B Colour |  | 
| Observed U Magnitude or (U-B) Magnitude Uncertainty |  | 
| Observed Photovisual Magnitude | 5.0 | 
| Observed Photographic Magnitude | 6.1 | 
| Morgan Keenan (MK) Spectral Type | K3II-III | 
| One-Dimensional Spectral Class | K0 | 
| Position Angle |  | 
| Year of Observation |  AD |