Orbital period

[Silent_Star]

Can a planet have a negative orbital period? -23

 

[edd]

No. No more than it can have a negative radius.

 

[Silent_Star]

No. No more than it can have a negative radius.

And rotational period?

Yesterday i found a planet that had a negative orbital period today it say same with one planet but the rotational one

 

[xondk]

Can a planet have a negative orbital period? -23

Maybe means it orbitting against the normal orbit way, maybe it is a captured planet? you know when one is thrown out of its system, but captured by another?

 

[edd]

Maybe means it orbitting against the normal orbit way, maybe it is a captured planet? you know when one is thrown out of its system, but captured by another?

That's a very peculiar definition but a plausible explanation. It'd have issues in the unlikely event you'd have something orbiting perpendicular to the plane something else was moving in for example.

 

[majogl]

The minus in there might indicate the direction in which the planet orbits/spins.

 

[Traven Mayhem]

it's direction. in orbital dynamics this is referred to as 'normal' vs 'anti-normal' .. i'm unsure how one establishes the up/down frame of reference, but 'most' planets in a system, or at least ours orbit 'normal'.. it probably has to do with the direction the star or parent body is spinning.

 

[Valethar]

Can a planet have a negative orbital period? -23

Depends on the time of the month. Venus can definitely get a little out of sorts at that point.

 

[CMDR Poet Starwind]

have some rep for "normal / anti-normal"

 

[Daedalus1116]

Orbital period is time. I don't think my physics class taught about negative time XD.
If it were to indicate the direction, how would you establish the frame of reference?