Identification Data |
Common Name | |
Constellation | Delphinus |
Star Name | 16 Del |
Skymap Number | 20550153 |
Henry Draper (HD) Number | 199254 |
Harvard Revised (HR) Number | 8012 |
SAO Number | 106666 |
Durchmusterung (DM) Number | BD+12 4501 |
Washington Double Stars (WDS) Number
| 20556+1234
|
Positional Data |
Position and Proper Motion (PPM) Number | 139290 |
Right Ascension (RA) J2000 | 20h 55m 38.571s |
Declination (Dec) J2000 | +12° 34' 6.809" |
Position Uncertainty | 0.0075s |
Proper Motion in RA (J2000)/cos(Dec) | +0.00213 |
Proper Motion in Dec (J2000) | +0.021166 |
Radial Velocity | +002.0km s-1 |
Trigonometric Parallax | +0.01635s |
Trigonometric Parallax Uncertainty | 0.00073s |
GCI Unit Vector in X (J2000) | 0.676917 |
GCI Unit Vector in Y (J2000) | -0.703157 |
GCI Unit Vector in Z (J2000) | 0.217608 |
Galactic Longitude | 59.79° |
Galactic Latitude
| -20.42°
|
Observational Data |
Observed Visual Magnitude (V) | 5.54 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
Observed B Magnitude | 5.67 |
Observed B-V Colour | +0.127 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.004 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 5.5 |
Observed Photographic Magnitude | 5.7 |
Morgan Keenan (MK) Spectral Type | A4V |
One-Dimensional Spectral Class | A2 |
Position Angle | 17 |
Year of Observation | 1960. AD |