Identification Data |
Common Name | |
Constellation | Saggitarius |
Star Name | 28 Sgr |
Skymap Number | 18460079 |
Henry Draper (HD) Number | 173460 |
Harvard Revised (HR) Number | 7046 |
SAO Number | 187255 |
Durchmusterung (DM) Number | CD-2213275 |
Washington Double Stars (WDS) Number
| 18463-2224
|
Positional Data |
Position and Proper Motion (PPM) Number | 268874 |
Right Ascension (RA) J2000 | 18h 46m 20.608s |
Declination (Dec) J2000 | -22° 23' 31.834" |
Position Uncertainty | 0.0091s |
Proper Motion in RA (J2000)/cos(Dec) | +0.00231 |
Proper Motion in Dec (J2000) | +0.003566 |
Radial Velocity | -002.7km s-1 |
Trigonometric Parallax | +0.00255s |
Trigonometric Parallax Uncertainty | 0.00103s |
GCI Unit Vector in X (J2000) | 0.185693 |
GCI Unit Vector in Y (J2000) | -0.905759 |
GCI Unit Vector in Z (J2000) | -0.380944 |
Galactic Longitude | 12.28° |
Galactic Latitude
| -8.94°
|
Observational Data |
Observed Visual Magnitude (V) | 5.38 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.004 |
Observed B Magnitude | 6.98 |
Observed B-V Colour | +1.597 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.007 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 4.9 |
Observed Photographic Magnitude | |
Morgan Keenan (MK) Spectral Type | K4III |
One-Dimensional Spectral Class | K2 |
Position Angle | 212 |
Year of Observation | 1928. AD |