| Identification Data |
| Common Name | |
| Constellation | Saggitarius |
| Star Name | the1Sgr |
| Skymap Number | 19590167 |
| Henry Draper (HD) Number | 189103 |
| Harvard Revised (HR) Number | 7623 |
| SAO Number | 211716 |
| Durchmusterung (DM) Number | CD-3513831 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 299634 |
| Right Ascension (RA) J2000 | 19h 59m 44.178s |
| Declination (Dec) J2000 | -35° 16' 34.700" |
| Position Uncertainty | 0.0095s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.00049 |
| Proper Motion in Dec (J2000) | -0.025266 |
| Radial Velocity | +000.9km s-1 |
| Trigonometric Parallax | +0.00528s |
| Trigonometric Parallax Uncertainty | 0.00090s |
| GCI Unit Vector in X (J2000) | 0.407375 |
| GCI Unit Vector in Y (J2000) | -0.707472 |
| GCI Unit Vector in Z (J2000) | -0.577520 |
| Galactic Longitude | 5.53° |
Galactic Latitude
| -28.47°
|
| Observational Data |
| Observed Visual Magnitude (V) | 4.37 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
| Observed B Magnitude | 4.22 |
| Observed B-V Colour | -0.146 |
| 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 | 4.4 |
| Observed Photographic Magnitude | 4.2 |
| Morgan Keenan (MK) Spectral Type | B3IV |
| One-Dimensional Spectral Class | B3 |
| Position Angle | 175 |
| Year of Observation | 1987. AD |
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