Identification Data |
Common Name | |
Constellation | Delphinus |
Star Name | 1 Del |
Skymap Number | 20300078 |
Henry Draper (HD) Number | 195325 |
Harvard Revised (HR) Number | 7836 |
SAO Number | 106172 |
Durchmusterung (DM) Number | BD+10 4303 |
Washington Double Stars (WDS) Number
| 20303+1054
|
Positional Data |
Position and Proper Motion (PPM) Number | 138473 |
Right Ascension (RA) J2000 | 20h 30m 17.962s |
Declination (Dec) J2000 | +10° 53' 45.327" |
Position Uncertainty | 0.0106s |
Proper Motion in RA (J2000)/cos(Dec) | +0.00131 |
Proper Motion in Dec (J2000) | +0.003567 |
Radial Velocity | -015.5km s-1 |
Trigonometric Parallax | +0.00576s |
Trigonometric Parallax Uncertainty | 0.00098s |
GCI Unit Vector in X (J2000) | 0.598804 |
GCI Unit Vector in Y (J2000) | -0.778269 |
GCI Unit Vector in Z (J2000) | 0.189026 |
Galactic Longitude | 54.66° |
Galactic Latitude
| -16.21°
|
Observational Data |
Observed Visual Magnitude (V) | 6.06 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.006 |
Observed B Magnitude | 6.03 |
Observed B-V Colour | -0.025 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.007 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 5.9 |
Observed Photographic Magnitude | 6.1 |
Morgan Keenan (MK) Spectral Type | A1e(shell) |
One-Dimensional Spectral Class | A0 |
Position Angle | 349 |
Year of Observation | 1980. AD |