Magnitude 0.77, white. A first-magnitude star, among the brightest few dozen visible.
Altair shines at magnitude 0.77, making it a first-magnitude star, among the brightest few dozen visible. Its B−V colour index of 0.22 makes it white to the eye, corresponding to a surface temperature of around 8,000 K.
It sits at right ascension 19.85 hours and declination +8.9°. It straddles the celestial equator, so it is visible from essentially anywhere on Earth at the right time of year.
SkyRef shows exactly where Altair is from your location right now — altitude, compass direction, and rise and set times.