Observe Castor 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.

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LUNDI 11 MAI 2026 À 20:14:34 UTC+2

Scene Notes

Observation of Castor

Visualize in real time the position of Castor in the sky.

StarMagnitudeDistanceEquatorial position J2000Current Equatorial PositionCurrent Horizontal Position at Marseille
Castor1.9251 light yearsRight ascension :
7ʰ34ᵐ35.873ˢ
Declination : 31°53'35.873″		Right ascension :
7ʰ36ᵐ16.4864090855ˢ
Declination :
31°49′49.4641623358″		Azimut :
78.68181776584237°
Altitude :
60.60817063703013°