ดาวดวงแก้ว vs ดาวคาเพลลา
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| Property | ดาวดวงแก้ว | ดาวคาเพลลา |
|---|---|---|
| ชื่อเรียก | 16Alp Boo | 13Alp Aur |
| กลุ่มดาว | N/A | N/A |
| ประเภทสเปกตรัม | Class K — K-type (Orange) | Class M — M-type (Red) |
| โชติมาตรปรากฏ | -0.05 | +0.08 |
| โชติมาตรสัมบูรณ์ | -0.31 | -0.51 |
| ระยะทาง | 36.7 ly | 42.8 ly |
| มวล | N/A | N/A |
| รัศมี | N/A | N/A |
| อุณหภูมิ | N/A | N/A |
| ความส่องสว่าง | N/A | N/A |
Key Differences
- ◆ Both are G-K giant systems among the six brightest stars in the night sky.
- ◆ Arcturus is a single K-type giant with an unusual high-velocity orbit through the Galaxy.
- ◆ Capella consists of two G-type giants orbiting each other every 104 days.
- ◆ Arcturus is slightly closer at ~36.7 light-years; Capella is ~43 light-years away.
- ◆ Arcturus is the brightest star in the northern hemisphere; Capella is the brightest in Auriga.