Will a Halved Earth Orbital Period Affect Solar and Sidereal Days Differently?

[Carolyn]

I know that a solar day is about 4 minutes longer than a sidereal day.

But what if the Earth orbital period around the sun is halved, but the rotation period is same?

Will the solar day still be about 4 minutes longer?

Thanks.

 

[mgb_phys]

The 4minutes is to account for the distance across the sky the sun moves in a day.
So it takes 23:56 min for the Earth to rotate but then you have to move another 4mins to catch up with the sun which has moved on a bit.
If the earht moved twice as fast around the sun, the sun would have moved twice as far and so you would need (roughly) an extra 8 minutes to catch up and a solar day would 24:04.

 

[Carolyn]

this makes sense, thanks.