| Identification Data |
| Common Name | |
| Constellation | Eridanus |
| Star Name | 16tau4Eri |
| Skymap Number | 3190053 |
| Henry Draper (HD) Number | 20720 |
| Harvard Revised (HR) Number | 1003 |
| SAO Number | 168460 |
| Durchmusterung (DM) Number | BD-22 584 |
Washington Double Stars (WDS) Number
| 03195-2145
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 246096 |
| Right Ascension (RA) J2000 | 3h 19m 31.001s |
| Declination (Dec) J2000 | -21° 45' 28.310" |
| Position Uncertainty | 0.0102s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.00369 |
| Proper Motion in Dec (J2000) | +0.032266 |
| Radial Velocity | +041.7km s-1 |
| Trigonometric Parallax | +0.01263s |
| Trigonometric Parallax Uncertainty | 0.00089s |
| GCI Unit Vector in X (J2000) | 0.598494 |
| GCI Unit Vector in Y (J2000) | 0.710210 |
| GCI Unit Vector in Z (J2000) | -0.370685 |
| Galactic Longitude | 212.09° |
Galactic Latitude
| -56.00°
|
| Observational Data |
| Observed Visual Magnitude (V) | 3.74 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
| Observed B Magnitude | 5.29 |
| Observed B-V Colour | +1.552 |
| 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 | 4.0 |
| Observed Photographic Magnitude | 5.3 |
| Morgan Keenan (MK) Spectral Type | M3+IIIaCa-1 |
| One-Dimensional Spectral Class | M0 |
| Position Angle | 288 |
| Year of Observation | 1964. AD |
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