Identification Data |
Common Name | Alniyat |
Constellation | Scorpius |
Star Name | 23tau Sco |
Skymap Number | 16350164 |
Henry Draper (HD) Number | 149438 |
Harvard Revised (HR) Number | 6165 |
SAO Number | 184481 |
Durchmusterung (DM) Number | CD-2711015 |
Washington Double Stars (WDS) Number
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Positional Data |
Position and Proper Motion (PPM) Number | 265701 |
Right Ascension (RA) J2000 | 16h 35m 52.953s |
Declination (Dec) J2000 | -28° 12' 57.658" |
Position Uncertainty | 0.0091s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00065 |
Proper Motion in Dec (J2000) | -0.022566 |
Radial Velocity | +002.0km s-1 |
Trigonometric Parallax | +0.00759s |
Trigonometric Parallax Uncertainty | 0.00078s |
GCI Unit Vector in X (J2000) | -0.316205 |
GCI Unit Vector in Y (J2000) | -0.822482 |
GCI Unit Vector in Z (J2000) | -0.472797 |
Galactic Longitude | 351.54° |
Galactic Latitude
| 12.81°
|
Observational Data |
Observed Visual Magnitude (V) | 2.83 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
Observed B Magnitude | 2.62 |
Observed B-V Colour | -0.207 |
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 | 2.9 |
Observed Photographic Magnitude | 2.7 |
Morgan Keenan (MK) Spectral Type | B0V |
One-Dimensional Spectral Class | B0 |
Position Angle | |
Year of Observation | AD |