プロキシマ・ケンタウリ vs Rigil Kentaurus
| 特性 | プロキシマ・ケンタウリ | Rigil Kentaurus |
|---|---|---|
| 名称 | N/A | Alp1Cen |
| 星座 | Centaurus | Centaurus |
| スペクトル型 | Class M — M-type (Red) | Class G — G-type (Yellow) |
| 見かけの等級 | +11.01 | -0.01 |
| 絶対等級 | 15.45 | 4.38 |
| 距離 | 4.2 ly | 4.3 ly |
| 質量 | N/A | N/A |
| 半径 | N/A | N/A |
| 温度 | N/A | N/A |
| 光度 | N/A | N/A |
主な違い
- ◆ Both are members of the Alpha Centauri system, the nearest stellar system to the Sun.
- ◆ Rigil Kentaurus (Alpha Cen A) is a G-type solar analog; Proxima Centauri is an M-type red dwarf.
- ◆ Rigil Kentaurus is slightly more massive and luminous than the Sun; Proxima Centauri has just 12% of the Sun's mass.
- ◆ Proxima Centauri orbits the Alpha Centauri AB pair at a vast distance of roughly 0.2 light-years.
- ◆ Rigil Kentaurus is visible to the naked eye at magnitude −0.01; Proxima is invisible without a telescope.