فم الحوت vs Vega
| Property |
فم الحوت |
Vega |
| التسمية |
24Alp PsA |
3Alp Lyr |
| الكوكبة |
N/A |
Lyra |
| النوع الطيفي |
Class A — A-type (White) |
Class A — A-type (White) |
| القدر الظاهري |
+1.17 |
+0.03 |
| القدر المطلق |
1.74 |
0.60 |
| المسافة |
25.1 ly |
25.0 ly |
| الكتلة |
N/A |
N/A |
| نصف القطر |
N/A |
N/A |
| درجة الحرارة |
N/A |
N/A |
| السطوع |
N/A |
N/A |
Key Differences
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Both are young A-type benchmark stars with prominent debris disks, used to calibrate stellar and planetary evolution models.
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Fomalhaut is the southernmost autumn star easily seen from northern mid-latitudes.
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Vega is approximately 1.9 times more massive than Fomalhaut.
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Both have been candidate targets for direct imaging of orbiting companions.
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Fomalhaut is one of only 18 stars with disks resolved by Hubble; Vega's disk was first revealed by IRAS in 1983.