Identification Data |
Common Name | |
Constellation | Virgo |
Star Name | 20 Vir |
Skymap Number | 12330004 |
Henry Draper (HD) Number | 109217 |
Harvard Revised (HR) Number | 4777 |
SAO Number | 100146 |
Durchmusterung (DM) Number | BD+11 2473 |
Washington Double Stars (WDS) Number
|
|
Positional Data |
Position and Proper Motion (PPM) Number | 129139 |
Right Ascension (RA) J2000 | 12h 33m 2.879s |
Declination (Dec) J2000 | +10° 17' 44.416" |
Position Uncertainty | 0.0090s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00340 |
Proper Motion in Dec (J2000) | +0.004366 |
Radial Velocity | +000.5km s-1 |
Trigonometric Parallax | +0.00692s |
Trigonometric Parallax Uncertainty | 0.00085s |
GCI Unit Vector in X (J2000) | -0.973687 |
GCI Unit Vector in Y (J2000) | -0.141386 |
GCI Unit Vector in Z (J2000) | 0.178728 |
Galactic Longitude | 287.66° |
Galactic Latitude
| 72.62°
|
Observational Data |
Observed Visual Magnitude (V) | 6.29 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.004 |
Observed B Magnitude | 7.23 |
Observed B-V Colour | +0.942 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.006 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 6.5 |
Observed Photographic Magnitude | |
Morgan Keenan (MK) Spectral Type | G8III |
One-Dimensional Spectral Class | K0 |
Position Angle | |
Year of Observation | AD |