| Identification Data | 
| Common Name |  | 
| Constellation | Leo | 
| Star Name | 77sig Leo | 
| Skymap Number | 11210016 | 
| Henry Draper (HD) Number | 98664 | 
| Harvard Revised (HR) Number | 4386 | 
| SAO Number | 118804 | 
| Durchmusterung (DM) Number | BD+06 2437 | 
Washington Double Stars (WDS) Number
  | 
  | 
| Positional Data | 
| Position and Proper Motion (PPM) Number | 157768 | 
| Right Ascension (RA) J2000 | 11h 21m 8.194s | 
| Declination (Dec) J2000 | +6° 1' 45.558" | 
| Position Uncertainty | 0.0088s | 
| Proper Motion in RA (J2000)/cos(Dec) | -0.00615 | 
| Proper Motion in Dec (J2000) | -0.012866 | 
| Radial Velocity | -005.3km s-1 | 
| Trigonometric Parallax | +0.01524s | 
| Trigonometric Parallax Uncertainty | 0.00081s | 
| GCI Unit Vector in X (J2000) | -0.980204 | 
| GCI Unit Vector in Y (J2000) | 0.167829 | 
| GCI Unit Vector in Z (J2000) | 0.105037 | 
| Galactic Longitude | 253.38° | 
Galactic Latitude
  | 59.90°
  | 
| Observational Data | 
| Observed Visual Magnitude (V) | 4.05 | 
| Derived Visual Magnitude |  | 
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 | 
| Observed B Magnitude | 4.00 | 
| Observed B-V Colour | -0.051 | 
| 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 | 4.1 | 
| Observed Photographic Magnitude |  | 
| Morgan Keenan (MK) Spectral Type | B9.5Vs | 
| One-Dimensional Spectral Class | A0 | 
| Position Angle |  | 
| Year of Observation |  AD |