| Identification Data |
| Common Name | |
| Constellation | Centaurus |
| Star Name | 4 Cen |
| Skymap Number | 13530032 |
| Henry Draper (HD) Number | 120955 |
| Harvard Revised (HR) Number | 5221 |
| SAO Number | 204944 |
| Durchmusterung (DM) Number | CD-3110729 |
Washington Double Stars (WDS) Number
| 13532-3156
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 291934 |
| Right Ascension (RA) J2000 | 13h 53m 12.539s |
| Declination (Dec) J2000 | -31° 55' 39.404" |
| Position Uncertainty | 0.0087s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.00106 |
| Proper Motion in Dec (J2000) | -0.010767 |
| Radial Velocity | +005.2km s-1 |
| Trigonometric Parallax | +0.00487s |
| Trigonometric Parallax Uncertainty | 0.00071s |
| GCI Unit Vector in X (J2000) | -0.747260 |
| GCI Unit Vector in Y (J2000) | -0.402396 |
| GCI Unit Vector in Z (J2000) | -0.528847 |
| Galactic Longitude | 317.94° |
Galactic Latitude
| 29.14°
|
| Observational Data |
| Observed Visual Magnitude (V) | 4.74 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
| Observed B Magnitude | 4.61 |
| Observed B-V Colour | -0.135 |
| 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 | 4.4 |
| Observed Photographic Magnitude | 4.6 |
| Morgan Keenan (MK) Spectral Type | B4IV |
| One-Dimensional Spectral Class | B5 |
| Position Angle | 185 |
| Year of Observation | 1980. AD |
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