| Identification Data |
| Common Name | |
| Constellation | Leo |
| Star Name | 20 Leo |
| Skymap Number | 9490153 |
| Henry Draper (HD) Number | 85040 |
| Harvard Revised (HR) Number | 3889 |
| SAO Number | 81035 |
| Durchmusterung (DM) Number | BD+21 2113 |
Washington Double Stars (WDS) Number
| 09498+2111
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 99888 |
| Right Ascension (RA) J2000 | 9h 49m 50.096s |
| Declination (Dec) J2000 | +21° 10' 45.937" |
| Position Uncertainty | 0.0129s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.00318 |
| Proper Motion in Dec (J2000) | -0.018567 |
| Radial Velocity | +026.0km s-1 |
| Trigonometric Parallax | +0.00634s |
| Trigonometric Parallax Uncertainty | 0.00094s |
| GCI Unit Vector in X (J2000) | -0.786062 |
| GCI Unit Vector in Y (J2000) | 0.501573 |
| GCI Unit Vector in Z (J2000) | 0.361290 |
| Galactic Longitude | 210.96° |
Galactic Latitude
| 48.37°
|
| Observational Data |
| Observed Visual Magnitude (V) | 6.08 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
| Observed B Magnitude | 6.34 |
| Observed B-V Colour | +0.264 |
| 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 | 6.0 |
| Observed Photographic Magnitude | |
| Morgan Keenan (MK) Spectral Type | A7IVn |
| One-Dimensional Spectral Class | F0 |
| Position Angle | 202 |
| Year of Observation | 1993. AD |
