Canopus vs Sirio
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| Property | Canopus | Sirio |
|---|---|---|
| Designación | Alp Car | 9Alp CMa |
| Constelación | N/A | Canis Major |
| Clase Espectral | Class F — F-type (Yellow-White) | Class A — A-type (White) |
| Magnitud Aparente | -0.62 | -1.44 |
| Magnitud Absoluta | -5.50 | 1.45 |
| Distancia | 309 ly | 8.6 ly |
| Masa | N/A | N/A |
| Radio | N/A | N/A |
| Temperatura | N/A | N/A |
| Luminosidad | N/A | N/A |
Key Differences
- ◆ Sirius is the brightest star in the sky (mag −1.46); Canopus is the second-brightest (mag −0.74).
- ◆ Sirius is only 8.6 light-years away; Canopus is approximately 310 light-years distant.
- ◆ Canopus is a luminous F-type bright giant at ~10,700 L☉; Sirius is an A-type main-sequence star at 25.4 L☉.
- ◆ Canopus is used for spacecraft attitude control due to its exceptional brightness.
- ◆ Sirius has a white dwarf companion (Sirius B); Canopus is not known to have a stellar companion.