| Identification Data |
| Common Name | |
| Constellation | Centaurus |
| Star Name | eta Cen |
| Skymap Number | 14350082 |
| Henry Draper (HD) Number | 127972 |
| Harvard Revised (HR) Number | 5440 |
| SAO Number | 225044 |
| Durchmusterung (DM) Number | CD-41 8917 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 319680 |
| Right Ascension (RA) J2000 | 14h 35m 30.423s |
| Declination (Dec) J2000 | -42° 9' 28.168" |
| Position Uncertainty | 0.0090s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.00318 |
| Proper Motion in Dec (J2000) | -0.032466 |
| Radial Velocity | -000.2km s-1 |
| Trigonometric Parallax | +0.01057s |
| Trigonometric Parallax Uncertainty | 0.00083s |
| GCI Unit Vector in X (J2000) | -0.577099 |
| GCI Unit Vector in Y (J2000) | -0.465274 |
| GCI Unit Vector in Z (J2000) | -0.671175 |
| Galactic Longitude | 322.78° |
Galactic Latitude
| 16.67°
|
| Observational Data |
| Observed Visual Magnitude (V) | 2.34 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.004 |
| Observed B Magnitude | 2.18 |
| Observed B-V Colour | -0.160 |
| 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 | 2.7 |
| Observed Photographic Magnitude | 2.5 |
| Morgan Keenan (MK) Spectral Type | B1.5Vne |
| One-Dimensional Spectral Class | B3 |
| Position Angle | |
| Year of Observation | AD |
