Identification Data |
Common Name | |
Constellation | Serpens |
Star Name | 61 Ser |
Skymap Number | 18310220 |
Henry Draper (HD) Number | 170920 |
Harvard Revised (HR) Number | 6957 |
SAO Number | 142372 |
Durchmusterung (DM) Number | BD-01 3504 |
Washington Double Stars (WDS) Number
|
|
Positional Data |
Position and Proper Motion (PPM) Number | 180356 |
Right Ascension (RA) J2000 | 18h 31m 56.994s |
Declination (Dec) J2000 | -1° 0' 10.719" |
Position Uncertainty | 0.0098s |
Proper Motion in RA (J2000)/cos(Dec) | +0.00067 |
Proper Motion in Dec (J2000) | -0.004666 |
Radial Velocity | -027.3km s-1 |
Trigonometric Parallax | +0.00572s |
Trigonometric Parallax Uncertainty | 0.00082s |
GCI Unit Vector in X (J2000) | 0.138935 |
GCI Unit Vector in Y (J2000) | -0.990147 |
GCI Unit Vector in Z (J2000) | -0.017504 |
Galactic Longitude | 29.82° |
Galactic Latitude
| 3.88°
|
Observational Data |
Observed Visual Magnitude (V) | 5.95 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.005 |
Observed B Magnitude | 6.11 |
Observed B-V Colour | +0.156 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.006 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 5.8 |
Observed Photographic Magnitude | 6.6 |
Morgan Keenan (MK) Spectral Type | A4III |
One-Dimensional Spectral Class | A2 |
Position Angle | |
Year of Observation | AD |