| Identification Data |
| Common Name | |
| Constellation | Lacerta |
| Star Name | 4 Lac |
| Skymap Number | 22240083 |
| Henry Draper (HD) Number | 212593 |
| Harvard Revised (HR) Number | 8541 |
| SAO Number | 51970 |
| Durchmusterung (DM) Number | BD+48 3715 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 62905 |
| Right Ascension (RA) J2000 | 22h 24m 30.991s |
| Declination (Dec) J2000 | +49° 28' 35.013" |
| Position Uncertainty | 0.0044s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.00053 |
| Proper Motion in Dec (J2000) | -0.003466 |
| Radial Velocity | -026.0km s-1 |
| Trigonometric Parallax | +0.00154s |
| Trigonometric Parallax Uncertainty | 0.00052s |
| GCI Unit Vector in X (J2000) | 0.594181 |
| GCI Unit Vector in Y (J2000) | -0.262943 |
| GCI Unit Vector in Z (J2000) | 0.760138 |
| Galactic Longitude | 99.90° |
Galactic Latitude
| -6.71°
|
| Observational Data |
| Observed Visual Magnitude (V) | 4.60 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
| Observed B Magnitude | 4.66 |
| Observed B-V Colour | +0.057 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.002 |
| Observed U Magnitude | |
| Observed U-B Colour | |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | |
| Observed Photovisual Magnitude | 4.6 |
| Observed Photographic Magnitude | 4.6 |
| Morgan Keenan (MK) Spectral Type | B9Iab |
| One-Dimensional Spectral Class | B8 |
| Position Angle | |
| Year of Observation | AD |
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