Identification Data |
Common Name | |
Constellation | Equuleus |
Star Name | 9 Equ |
Skymap Number | 21210012 |
Henry Draper (HD) Number | 203291 |
Harvard Revised (HR) Number | 8163 |
SAO Number | 126719 |
Durchmusterung (DM) Number | BD+06 4802 |
Washington Double Stars (WDS) Number
|
|
Positional Data |
Position and Proper Motion (PPM) Number | 171619 |
Right Ascension (RA) J2000 | 21h 21m 4.824s |
Declination (Dec) J2000 | +7° 21' 16.210" |
Position Uncertainty | 0.0103s |
Proper Motion in RA (J2000)/cos(Dec) | +0.00277 |
Proper Motion in Dec (J2000) | -0.017966 |
Radial Velocity | -019.9km s-1 |
Trigonometric Parallax | +0.00308s |
Trigonometric Parallax Uncertainty | 0.00084s |
GCI Unit Vector in X (J2000) | 0.762739 |
GCI Unit Vector in Y (J2000) | -0.633911 |
GCI Unit Vector in Z (J2000) | 0.128008 |
Galactic Longitude | 59.20° |
Galactic Latitude
| -28.55°
|
Observational Data |
Observed Visual Magnitude (V) | 5.82 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.004 |
Observed B Magnitude | 7.46 |
Observed B-V Colour | +1.636 |
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 | 6.0 |
Observed Photographic Magnitude | 7.5 |
Morgan Keenan (MK) Spectral Type | M2IIIa |
One-Dimensional Spectral Class | K5 |
Position Angle | |
Year of Observation | AD |