Identification Data |
Common Name | |
Constellation | Serpens |
Star Name | 21iot Ser |
Skymap Number | 15410071 |
Henry Draper (HD) Number | 140159 |
Harvard Revised (HR) Number | 5842 |
SAO Number | 101682 |
Durchmusterung (DM) Number | BD+20 3138 |
Washington Double Stars (WDS) Number
| 15416+1940
|
Positional Data |
Position and Proper Motion (PPM) Number | 131608 |
Right Ascension (RA) J2000 | 15h 41m 33.049s |
Declination (Dec) J2000 | +19° 40' 13.446" |
Position Uncertainty | 0.0302s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00410 |
Proper Motion in Dec (J2000) | -0.038667 |
Radial Velocity | -017.2km s-1 |
Trigonometric Parallax | +0.01697s |
Trigonometric Parallax Uncertainty | 0.00077s |
GCI Unit Vector in X (J2000) | -0.534873 |
GCI Unit Vector in Y (J2000) | -0.774987 |
GCI Unit Vector in Z (J2000) | 0.336609 |
Galactic Longitude | 31.42° |
Galactic Latitude
| 50.45°
|
Observational Data |
Observed Visual Magnitude (V) | 4.51 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
Observed B Magnitude | 4.57 |
Observed B-V Colour | +0.058 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.002 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 4.5 |
Observed Photographic Magnitude | 4.6 |
Morgan Keenan (MK) Spectral Type | A1V |
One-Dimensional Spectral Class | A2 |
Position Angle | |
Year of Observation | 1993. AD |