| Identification Data |
| Common Name | |
| Constellation | Lacerta |
| Star Name | 12 Lac |
| Skymap Number | 22410085 |
| Henry Draper (HD) Number | 214993 |
| Harvard Revised (HR) Number | 8640 |
| SAO Number | 72627 |
| Durchmusterung (DM) Number | BD+39 4912 |
Washington Double Stars (WDS) Number
| 22415+4014
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 63267 |
| Right Ascension (RA) J2000 | 22h 41m 28.650s |
| Declination (Dec) J2000 | +40° 13' 31.616" |
| Position Uncertainty | 0.0076s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.00006 |
| Proper Motion in Dec (J2000) | -0.005966 |
| Radial Velocity | -012.5km s-1 |
| Trigonometric Parallax | +0.00234s |
| Trigonometric Parallax Uncertainty | 0.00062s |
| GCI Unit Vector in X (J2000) | 0.719133 |
| GCI Unit Vector in Y (J2000) | -0.256505 |
| GCI Unit Vector in Z (J2000) | 0.645797 |
| Galactic Longitude | 97.66° |
Galactic Latitude
| -16.18°
|
| Observational Data |
| Observed Visual Magnitude (V) | 5.24 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.005 |
| Observed B Magnitude | 5.09 |
| Observed B-V Colour | -0.147 |
| 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 | 5.2 |
| Observed Photographic Magnitude | 5.0 |
| Morgan Keenan (MK) Spectral Type | B2III |
| One-Dimensional Spectral Class | B2 |
| Position Angle | 16 |
| Year of Observation | 1925. AD |
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