Observe Alpha Ophiuchi (Rasalhague) in the sky in real time in 3D. You will also be able to see the planets of the solar system, the Sun and the Moon. Navigate freely in the sky by clicking on the keys to move forward or backward in time. Discover its position and display the azimuth grid to find your way in the sky. The « screen » feature allows you to take a picture of the sky and download the image.

LUNDI 24 AOÛT 2026 À 02:46 UTC+2

Observation of Alpha Ophiuchi (Rasalhague)

Visualize in real time the position of Alpha Ophiuchi (Rasalhague) in the sky.

StarMagnitudeDistanceEquatorial position J2000Current Equatorial PositionCurrent Horizontal Position at Marseille
Alpha Ophiuchi (Rasalhague)2.0848.6 light yearsRight ascension :
17ʰ34ᵐ56.069ˢ
Declination : 12°33'56.069″		Right ascension :
17ʰ36ᵐ10.7844269789ˢ
Declination :
12°32′44.4873328957″		Azimut :
96.08543885063287°
Altitude :
11.927077043477365°
See Ophiuchus constellation