Identification Data |
Common Name | |
Constellation | Cygnus |
Star Name | 65tau Cyg |
Skymap Number | 21140150 |
Henry Draper (HD) Number | 202444 |
Harvard Revised (HR) Number | 8130 |
SAO Number | 71121 |
Durchmusterung (DM) Number | BD+37 4240 |
Washington Double Stars (WDS) Number
| 21148+3803
|
Positional Data |
Position and Proper Motion (PPM) Number | 400283 |
Right Ascension (RA) J2000 | 21h 14m 47.491s |
Declination (Dec) J2000 | +38° 2' 43.141" |
Position Uncertainty | 0.0060s |
Proper Motion in RA (J2000)/cos(Dec) | +0.01657 |
Proper Motion in Dec (J2000) | +0.410067 |
Radial Velocity | -021.1km s-1 |
Trigonometric Parallax | +0.04780s |
Trigonometric Parallax Uncertainty | 0.00061s |
GCI Unit Vector in X (J2000) | 0.591619 |
GCI Unit Vector in Y (J2000) | -0.519789 |
GCI Unit Vector in Z (J2000) | 0.616285 |
Galactic Longitude | 82.85° |
Galactic Latitude
| -7.43°
|
Observational Data |
Observed Visual Magnitude (V) | 3.74 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
Observed B Magnitude | 4.14 |
Observed B-V Colour | +0.404 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.003 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 3.8 |
Observed Photographic Magnitude | 4.1 |
Morgan Keenan (MK) Spectral Type | F2IV |
One-Dimensional Spectral Class | F0 |
Position Angle | |
Year of Observation | 1993. AD |