| Identification Data |
| Common Name | |
| Constellation | Leo |
| Star Name | 39 Leo |
| Skymap Number | 10170039 |
| Henry Draper (HD) Number | 89125 |
| Harvard Revised (HR) Number | 4039 |
| SAO Number | 81270 |
| Durchmusterung (DM) Number | BD+23 2207 |
Washington Double Stars (WDS) Number
| 10172+2306
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 100231 |
| Right Ascension (RA) J2000 | 10h 17m 14.538s |
| Declination (Dec) J2000 | +23° 6' 22.391" |
| Position Uncertainty | 0.0082s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.02996 |
| Proper Motion in Dec (J2000) | -0.097266 |
| Radial Velocity | +038.2km s-1 |
| Trigonometric Parallax | +0.04401s |
| Trigonometric Parallax Uncertainty | 0.00075s |
| GCI Unit Vector in X (J2000) | -0.828865 |
| GCI Unit Vector in Y (J2000) | 0.398717 |
| GCI Unit Vector in Z (J2000) | 0.392437 |
| Galactic Longitude | 210.82° |
Galactic Latitude
| 55.01°
|
| Observational Data |
| Observed Visual Magnitude (V) | 5.82 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.004 |
| Observed B Magnitude | 6.32 |
| Observed B-V Colour | +0.500 |
| 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 | 5.9 |
| Observed Photographic Magnitude | 6.3 |
| Morgan Keenan (MK) Spectral Type | F8Vbw |
| One-Dimensional Spectral Class | F5 |
| Position Angle | 299 |
| Year of Observation | 1972. AD |
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