AltairvsAscella
Altair has a higher Declination (9 vs -30 °), while Ascella has a higher Distance (88 vs 17 light-years), while Ascella has a higher Luminosity (58 vs 11 × Sun).
Brightness
1
Apparent Magnitude
3
2
Absolute Magnitude
0
11
Luminosity
58
Physical Properties
17
Distance
88
8,004
Surface Temperature
9,412
0
Color Index (B-V)
0
Position
20
Right Ascension
19
9
Declination
-30
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Data sourced from HYG Database (Free for any purpose, including commercial).