AltairvsBélénos
Altair has a higher Right Ascension (20 vs 1 h), while Bélénos has a higher Apparent Magnitude (7 vs 1 mag), while Bélénos has a higher Distance (145 vs 17 light-years).
Brightness
1
Apparent Magnitude
7
2
Absolute Magnitude
4
11
Luminosity
2
Physical Properties
17
Distance
145
8,004
Surface Temperature
6,059
0
Color Index (B-V)
1
Position
20
Right Ascension
1
9
Declination
29
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Data sourced from HYG Database (Free for any purpose, including commercial).