ดาวแอลกอล vs Mirfak
Behind the apparent view stands a gulf in output — −4.17 against −0.11 in absolute magnitude. Only 89.9 light-years separate the Sun from ดาวแอลกอล; Mirfak sits 5.6 times further out at 506. Mirfak is an F-type star in Perseus, while ดาวแอลกอล is a B-type star in Perseus. Mirfak is the brighter of the pair in the sky, at magnitude +1.79 against +2.09 for ดาวแอลกอล, roughly 1.3 times more light reaching the eye.
Property comparison
| Property | ดาวแอลกอล | Mirfak |
|---|---|---|
| ชื่อเรียก | 26Bet Per | 33Alp Per |
| กลุ่มดาว | Perseus | Perseus |
| ประเภทสเปกตรัม | Class B — B-type (Blue-White) | Class F — F-type (Yellow-White) |
| โชติมาตรปรากฏ | +2.09 | +1.79 |
| โชติมาตรสัมบูรณ์ | -0.11 | -4.17 |
| ระยะทาง | 89.9 ly | 506 ly |
| มวล | N/A | N/A |
| รัศมี | N/A | N/A |
| อุณหภูมิ | N/A | N/A |
| ความส่องสว่าง | N/A | N/A |
Full data for each star: ดาวแอลกอล · Mirfak
Key differences
Key Differences
- ◆ Both are prominent stars in Perseus and are often observed together.
- ◆ Mirfak is a yellow-white supergiant and the brightest member of the Alpha Persei Cluster.
- ◆ Algol is the famous Demon Star — the prototype eclipsing binary variable.
- ◆ Algol varies in brightness every 2.87 days; Mirfak does not show significant variability.
- ◆ Mirfak is farther away at ~510 light-years; Algol is ~93 light-years from Earth.