| Identification Data |
| Common Name | |
| Constellation | Octans |
| Star Name | alp Oct |
| Skymap Number | 21040133 |
| Henry Draper (HD) Number | 199532 |
| Harvard Revised (HR) Number | 8021 |
| SAO Number | 257879 |
| Durchmusterung (DM) Number | CP-77 1474 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 374864 |
| Right Ascension (RA) J2000 | 21h 4m 43.064s |
| Declination (Dec) J2000 | -77° 1' 25.562" |
| Position Uncertainty | 0.0070s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.00411 |
| Proper Motion in Dec (J2000) | -0.369466 |
| Radial Velocity | +045.0km s-1 |
| Trigonometric Parallax | +0.02207s |
| Trigonometric Parallax Uncertainty | 0.00057s |
| GCI Unit Vector in X (J2000) | 0.162013 |
| GCI Unit Vector in Y (J2000) | -0.155477 |
| GCI Unit Vector in Z (J2000) | -0.974463 |
| Galactic Longitude | 315.97° |
Galactic Latitude
| -33.65°
|
| Observational Data |
| Observed Visual Magnitude (V) | 5.13 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
| Observed B Magnitude | 5.63 |
| Observed B-V Colour | +0.501 |
| 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 | 5.2 |
| Observed Photographic Magnitude | |
| Morgan Keenan (MK) Spectral Type | A7III+G2III |
| One-Dimensional Spectral Class | F2 |
| Position Angle | |
| Year of Observation | AD |
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