| Identification Data |
| Common Name | |
| Constellation | Saggitarius |
| Star Name | 57 Sgr |
| Skymap Number | 19520051 |
| Henry Draper (HD) Number | 187739 |
| Harvard Revised (HR) Number | 7561 |
| SAO Number | 163060 |
| Durchmusterung (DM) Number | SD-19 5631 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 236612 |
| Right Ascension (RA) J2000 | 19h 52m 12.003s |
| Declination (Dec) J2000 | -19° 2' 41.969" |
| Position Uncertainty | 0.0151s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.00017 |
| Proper Motion in Dec (J2000) | -0.053366 |
| Radial Velocity | -026.0km s-1 |
| Trigonometric Parallax | +0.01046s |
| Trigonometric Parallax Uncertainty | 0.00093s |
| GCI Unit Vector in X (J2000) | 0.444502 |
| GCI Unit Vector in Y (J2000) | -0.834230 |
| GCI Unit Vector in Z (J2000) | -0.326311 |
| Galactic Longitude | 21.93° |
Galactic Latitude
| -21.67°
|
| Observational Data |
| Observed Visual Magnitude (V) | 5.90 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
| Observed B Magnitude | 6.87 |
| Observed B-V Colour | +0.966 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.005 |
| Observed U Magnitude | |
| Observed U-B Colour | |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | |
| Observed Photovisual Magnitude | 5.8 |
| Observed Photographic Magnitude | |
| Morgan Keenan (MK) Spectral Type | G5III |
| One-Dimensional Spectral Class | G5 |
| Position Angle | |
| Year of Observation | AD |
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