Lets use Jupiter which has a diameter of 142,984 km at a distance from Earth of 5 AU or 747,989,353 km. The answer should be around 40.0 arcseconds, I’m just having trouble understanding how to do the calculation. If someone could help it would be much appreciated.(adsbygoogle = window.adsbygoogle || []).push({});

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# How do astronomers measure an objects angular size?

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