| Identification Data |
| Common Name | Double Double (7054) |
| Constellation | Lyra |
| Star Name | 5eps2Lyr |
| Skymap Number | 18440267 |
| Henry Draper (HD) Number | 173608 |
| Harvard Revised (HR) Number | 7054 |
| SAO Number | 67315 |
| Durchmusterung (DM) Number | BD+39 3510 |
Washington Double Stars (WDS) Number
| 18443+3940
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 81726 |
| Right Ascension (RA) J2000 | 18h 44m 22.983s |
| Declination (Dec) J2000 | +39° 36' 46.083" |
| Position Uncertainty | 0.0142s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.00062 |
| Proper Motion in Dec (J2000) | +0.069167 |
| Radial Velocity | -024.4km s-1 |
| Trigonometric Parallax | +0.02034s |
| Trigonometric Parallax Uncertainty | 0.00077s |
| GCI Unit Vector in X (J2000) | 0.148257 |
| GCI Unit Vector in Y (J2000) | -0.755970 |
| GCI Unit Vector in Z (J2000) | 0.637596 |
| Galactic Longitude | 68.80° |
Galactic Latitude
| 18.17°
|
| Observational Data |
| Observed Visual Magnitude (V) | 5.38 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.007 |
| Observed B Magnitude | 5.61 |
| Observed B-V Colour | +0.230 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.009 |
| Observed U Magnitude | |
| Observed U-B Colour | |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | |
| Observed Photovisual Magnitude | 5.4 |
| Observed Photographic Magnitude | 5.5 |
| Morgan Keenan (MK) Spectral Type | F0Vn |
| One-Dimensional Spectral Class | A5 |
| Position Angle | 86 |
| Year of Observation | 1992. AD |
Printer Version