How does the angular size of the solar disk change during the year when observed from the Earth?
September 16, 2020 | Education
| The size of the Sun’s disk changes throughout the year due to the movement of the earth in an elliptical orbit. It will be maximum when the Earth passes perihelion – the closest point in its orbit in relation to the Sun and will be minimum – at the greatest distance from the Sun – at aphelion. Thus, the angular disk of the Sun has a maximum size on January 3 (32´) and a minimum on June 2 (29´).
