| Identification Data | 
| Common Name |  | 
| Constellation | Canis Major | 
| Star Name | 20iot CMa | 
| Skymap Number | 6560033 | 
| Henry Draper (HD) Number | 51309 | 
| Harvard Revised (HR) Number | 2596 | 
| SAO Number | 152126 | 
| Durchmusterung (DM) Number | SD-16 1661 | 
Washington Double Stars (WDS) Number
  | 
  | 
| Positional Data | 
| Position and Proper Motion (PPM) Number | 217897 | 
| Right Ascension (RA) J2000 | 6h 56m 8.224s | 
| Declination (Dec) J2000 | -17° 3' 15.272" | 
| Position Uncertainty | 0.0070s | 
| Proper Motion in RA (J2000)/cos(Dec) | -0.00017 | 
| Proper Motion in Dec (J2000) | +0.001966 | 
| Radial Velocity | +041.0km s-1 | 
| Trigonometric Parallax | +0.00106s | 
| Trigonometric Parallax Uncertainty | 0.00065s | 
| GCI Unit Vector in X (J2000) | -0.231839 | 
| GCI Unit Vector in Y (J2000) | 0.927491 | 
| GCI Unit Vector in Z (J2000) | -0.293277 | 
| Galactic Longitude | 228.71° | 
Galactic Latitude
  | -6.68°
  | 
| Observational Data | 
| Observed Visual Magnitude (V) | 4.39 | 
| Derived Visual Magnitude |  | 
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 | 
| Observed B Magnitude | 4.31 | 
| Observed B-V Colour | -0.076 | 
| 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 | 4.4 | 
| Observed Photographic Magnitude | 4.3 | 
| Morgan Keenan (MK) Spectral Type | B3II | 
| One-Dimensional Spectral Class | B5 | 
| Position Angle |  | 
| Year of Observation |  AD |