Identification Data |
Common Name | |
Constellation | Apus |
Star Name | iot Aps |
Skymap Number | 17220022 |
Henry Draper (HD) Number | 156190 |
Harvard Revised (HR) Number | 6411 |
SAO Number | 257491 |
Durchmusterung (DM) Number | CP-69 2719 |
Washington Double Stars (WDS) Number
| 17221-7007
|
Positional Data |
Position and Proper Motion (PPM) Number | 373425 |
Right Ascension (RA) J2000 | 17h 22m 5.869s |
Declination (Dec) J2000 | -70° 7' 23.543" |
Position Uncertainty | 0.0084s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00034 |
Proper Motion in Dec (J2000) | -0.012067 |
Radial Velocity | -004.3km s-1 |
Trigonometric Parallax | +0.00285s |
Trigonometric Parallax Uncertainty | 0.00063s |
GCI Unit Vector in X (J2000) | -0.055973 |
GCI Unit Vector in Y (J2000) | -0.335360 |
GCI Unit Vector in Z (J2000) | -0.940426 |
Galactic Longitude | 322.28° |
Galactic Latitude
| -18.29°
|
Observational Data |
Observed Visual Magnitude (V) | 5.40 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.001 |
Observed B Magnitude | 5.36 |
Observed B-V Colour | -0.045 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.001 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 5.6 |
Observed Photographic Magnitude | 5.6 |
Morgan Keenan (MK) Spectral Type | B9V+B9.5V |
One-Dimensional Spectral Class | B8 |
Position Angle | 290 |
Year of Observation | 1992. AD |