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 |