AltairvsFormosa
Formosa has a higher Distance (399 vs 17 light-years), while Formosa has a higher Apparent Magnitude (6 vs 1 mag), while Formosa has a higher Color Index (B-V) (1 vs 0).
Brightness
1
Apparent Magnitude
6
2
Absolute Magnitude
1
11
Luminosity
34
Physical Properties
17
Distance
399
8,004
Surface Temperature
4,719
0
Color Index (B-V)
1
Position
20
Right Ascension
12
9
Declination
20
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Data sourced from HYG Database (Free for any purpose, including commercial).