| Identification Data |
| Common Name | Arkab Prior |
| Constellation | Saggitarius |
| Star Name | bet1Sgr |
| Skymap Number | 19220121 |
| Henry Draper (HD) Number | 181454 |
| Harvard Revised (HR) Number | 7337 |
| SAO Number | 229646 |
| Durchmusterung (DM) Number | CD-4413277 |
Washington Double Stars (WDS) Number
| 19226-4428
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 325041 |
| Right Ascension (RA) J2000 | 19h 22m 38.292s |
| Declination (Dec) J2000 | -44° 27' 32.273" |
| Position Uncertainty | 0.0236s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.00068 |
| Proper Motion in Dec (J2000) | -0.022466 |
| Radial Velocity | -010.7km s-1 |
| Trigonometric Parallax | +0.00862s |
| Trigonometric Parallax Uncertainty | 0.00095s |
| GCI Unit Vector in X (J2000) | 0.251822 |
| GCI Unit Vector in Y (J2000) | -0.667853 |
| GCI Unit Vector in Z (J2000) | -0.700398 |
| Galactic Longitude | 353.62° |
Galactic Latitude
| -23.93°
|
| Observational Data |
| Observed Visual Magnitude (V) | 3.96 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
| Observed B Magnitude | 3.87 |
| Observed B-V Colour | -0.089 |
| 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 | 4.2 |
| Observed Photographic Magnitude | 4.2 |
| Morgan Keenan (MK) Spectral Type | B9V |
| One-Dimensional Spectral Class | B8 |
| Position Angle | 77 |
| Year of Observation | 1982. AD |
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