Identification Data |
Common Name | |
Constellation | Serpens |
Star Name | 58eta Ser |
Skymap Number | 18210079 |
Henry Draper (HD) Number | 168723 |
Harvard Revised (HR) Number | 6869 |
SAO Number | 142241 |
Durchmusterung (DM) Number | SD-02 4599 |
Washington Double Stars (WDS) Number
| 18213-0252
|
Positional Data |
Position and Proper Motion (PPM) Number | 201654 |
Right Ascension (RA) J2000 | 18h 21m 18.600s |
Declination (Dec) J2000 | -2° 53' 55.770" |
Position Uncertainty | 0.0069s |
Proper Motion in RA (J2000)/cos(Dec) | -0.03655 |
Proper Motion in Dec (J2000) | -0.700766 |
Radial Velocity | +008.9km s-1 |
Trigonometric Parallax | +0.05281s |
Trigonometric Parallax Uncertainty | 0.00075s |
GCI Unit Vector in X (J2000) | 0.092730 |
GCI Unit Vector in Y (J2000) | -0.994406 |
GCI Unit Vector in Z (J2000) | -0.050572 |
Galactic Longitude | 26.91° |
Galactic Latitude
| 5.36°
|
Observational Data |
Observed Visual Magnitude (V) | 3.25 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
Observed B Magnitude | 4.19 |
Observed B-V Colour | +0.943 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.005 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 3.4 |
Observed Photographic Magnitude | 4.4 |
Morgan Keenan (MK) Spectral Type | K0III-IV |
One-Dimensional Spectral Class | K0 |
Position Angle | 61 |
Year of Observation | 1923. AD |