Alpheratz vs Denebola
Their true outputs differ by a factor near 7.8, absolute magnitudes −0.30 and +1.93. Seen from Earth the ranking is Alpheratz first at +2.07, Denebola second at +2.14. Denebola is the nearer of the two at 35.9 light-years, while Alpheratz lies 97.0 light-years away, some 2.7 times farther. Spectroscopically Alpheratz resolves as a B-type star in Andromeda and Denebola as an A-type star in Leo.
Property comparison
| Property | Alpheratz | Denebola |
|---|---|---|
| ชื่อเรียก | 21Alp And | 94Bet Leo |
| กลุ่มดาว | Andromeda | Leo |
| ประเภทสเปกตรัม | Class B — B-type (Blue-White) | Class A — A-type (White) |
| โชติมาตรปรากฏ | +2.07 | +2.14 |
| โชติมาตรสัมบูรณ์ | -0.30 | 1.93 |
| ระยะทาง | 97.0 ly | 35.9 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: Alpheratz · Denebola
Key differences
Key Differences
- ◆ Both are young A-type stars associated with notable asterisms.
- ◆ Alpheratz anchors the Great Square of Pegasus and is the brightest star in Andromeda.
- ◆ Denebola marks the tail of Leo and is a Delta Scuti variable with slight brightness fluctuations.
- ◆ Alpheratz is a chemically peculiar mercury-manganese star with unusual atmospheric abundances.
- ◆ Denebola hosts a circumstellar debris disk suggesting ongoing planetary formation.