Identification Data |
Common Name | Nair al Saif |
Constellation | Orion |
Star Name | 44iot Ori |
Skymap Number | 5350111 |
Henry Draper (HD) Number | 37043 |
Harvard Revised (HR) Number | 1899 |
SAO Number | 132323 |
Durchmusterung (DM) Number | SD-06 1241 |
Washington Double Stars (WDS) Number
| 05354-0555
|
Positional Data |
Position and Proper Motion (PPM) Number | 188225 |
Right Ascension (RA) J2000 | 5h 35m 25.982s |
Declination (Dec) J2000 | -5° 54' 35.645" |
Position Uncertainty | 0.0071s |
Proper Motion in RA (J2000)/cos(Dec) | +0.00015 |
Proper Motion in Dec (J2000) | -0.000666 |
Radial Velocity | +021.5km s-1 |
Trigonometric Parallax | +0.00246s |
Trigonometric Parallax Uncertainty | 0.00077s |
GCI Unit Vector in X (J2000) | 0.106420 |
GCI Unit Vector in Y (J2000) | 0.988976 |
GCI Unit Vector in Z (J2000) | -0.102964 |
Galactic Longitude | 209.53° |
Galactic Latitude
| -19.58°
|
Observational Data |
Observed Visual Magnitude (V) | 2.78 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
Observed B Magnitude | 2.57 |
Observed B-V Colour | -0.211 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.004 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 2.9 |
Observed Photographic Magnitude | |
Morgan Keenan (MK) Spectral Type | O9III |
One-Dimensional Spectral Class | Oe5 |
Position Angle | 141 |
Year of Observation | 1987. AD |