Identification Data |
Common Name | |
Constellation | Serpens |
Star Name | 55xi Ser |
Skymap Number | 17370129 |
Henry Draper (HD) Number | 159876 |
Harvard Revised (HR) Number | 6561 |
SAO Number | 160700 |
Durchmusterung (DM) Number | SD-15 4621 |
Washington Double Stars (WDS) Number
| 17376-1524
|
Positional Data |
Position and Proper Motion (PPM) Number | 233350 |
Right Ascension (RA) J2000 | 17h 37m 35.201s |
Declination (Dec) J2000 | -15° 23' 54.806" |
Position Uncertainty | 0.0141s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00272 |
Proper Motion in Dec (J2000) | -0.061366 |
Radial Velocity | -042.8km s-1 |
Trigonometric Parallax | +0.03093s |
Trigonometric Parallax Uncertainty | 0.00103s |
GCI Unit Vector in X (J2000) | -0.094136 |
GCI Unit Vector in Y (J2000) | -0.959495 |
GCI Unit Vector in Z (J2000) | -0.265532 |
Galactic Longitude | 10.61° |
Galactic Latitude
| 8.66°
|
Observational Data |
Observed Visual Magnitude (V) | 3.54 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
Observed B Magnitude | 3.82 |
Observed B-V Colour | +0.279 |
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 | 3.6 |
Observed Photographic Magnitude | 3.8 |
Morgan Keenan (MK) Spectral Type | F0IVDeltaSct |
One-Dimensional Spectral Class | A5 |
Position Angle | 132 |
Year of Observation | 1987. AD |