AltairvsChechia
Chechia has a higher Distance (214 vs 17 light-years), while Chechia has a higher Apparent Magnitude (6 vs 1 mag), while Chechia has a higher Color Index (B-V) (1 vs 0).
Brightness
1
Apparent Magnitude
6
2
Absolute Magnitude
2
11
Luminosity
10
Physical Properties
17
Distance
214
8,004
Surface Temperature
5,087
0
Color Index (B-V)
1
Position
20
Right Ascension
20
9
Declination
5
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Data sourced from HYG Database (Free for any purpose, including commercial).