| Identification Data |
| Common Name | |
| Constellation | Serpens |
| Star Name | 12tau2Ser |
| Skymap Number | 15320022 |
| Henry Draper (HD) Number | 138527 |
| Harvard Revised (HR) Number | 5770 |
| SAO Number | 101600 |
| Durchmusterung (DM) Number | BD+16 2797 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 131484 |
| Right Ascension (RA) J2000 | 15h 32m 9.675s |
| Declination (Dec) J2000 | +16° 3' 22.208" |
| Position Uncertainty | 0.0100s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.00020 |
| Proper Motion in Dec (J2000) | +0.006866 |
| Radial Velocity | -018.0km s-1 |
| Trigonometric Parallax | +0.00756s |
| Trigonometric Parallax Uncertainty | 0.00080s |
| GCI Unit Vector in X (J2000) | -0.577799 |
| GCI Unit Vector in Y (J2000) | -0.767888 |
| GCI Unit Vector in Z (J2000) | 0.276580 |
| Galactic Longitude | 24.80° |
Galactic Latitude
| 51.22°
|
| Observational Data |
| Observed Visual Magnitude (V) | 6.22 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.004 |
| Observed B Magnitude | 6.18 |
| Observed B-V Colour | -0.041 |
| 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 | 6.1 |
| Observed Photographic Magnitude | 6.1 |
| Morgan Keenan (MK) Spectral Type | B9V |
| One-Dimensional Spectral Class | B9 |
| Position Angle | |
| Year of Observation | AD |
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