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Do the planets have seasons?

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stupid_chris

stupid_chris

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Nope, axial tilt is currently impossible with the planets in the game, they're all at a perfect 90deg. And the temperature model is pretty much inaccurate, it's not affected by night/day cycle and the incident angle (that cause polar regions to normally be colder). So there's no seasons for now in the game, nor is there any kind of weather effect.

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Brotoro

Brotoro

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No, unfortunately the planets in KSP don't have seasons due to their axial tilt.

Although, is it possible to have seasons due to orbital inclination, if that's the case, then Moho, dres, eeloo and possibly eve have noticeable north south 'sun liberation' across many rotations.

Just a thought

Why would orbital inclination cause librations of the sun? The axes of each of these planets is perpendicular to their orbital planes.

The orbital eccentricities could produce seasonal effects (if the game accounted for the different energy received), and can cause librations.

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Proxima

Proxima

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No, there is not seasons on the planets, well at least definitely on Kerbin, as new Mun explorers may find it hard to reach the moon because they have to think more about 3 dimensions instead of 2. But it might be an interesting idea for those who want a more difficult edge to their gameplay.

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SpaceSphereOfDeath

SpaceSphereOfDeath

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Why would orbital inclination cause librations of the sun? The axes of each of these planets is perpendicular to their orbital planes.

The orbital eccentricities could produce seasonal effects (if the game accounted for the different energy received), and can cause librations.

Actually orbital inclination causes libation, this 'type' of vibration is most noticeable on tylo (that, yes has and orbital inclination of 0.5'). And For why it would cause seasons, if a planet has an axial tilt of 0' and an inclination of 0', the terminator would always appear perpendicular to the axis. However, look at say moho, the axial tilt is still zero (this is where we disagree), but relative to it's orbit, it's 7 degrees, causing the terminator to wobble 7' from the pole both directions ('south' and 'north'). thus creating seasons with no measurable effects.

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Brotoro

Brotoro

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Actually orbital inclination causes libation, this 'type' of vibration is most noticeable on tylo (that, yes has and orbital inclination of 0.5'). And For why it would cause seasons, if a planet has an axial tilt of 0' and an inclination of 0', the terminator would always appear perpendicular to the axis. However, look at say moho, the axial tilt is still zero (this is where we disagree), but relative to it's orbit, it's 7 degrees, causing the terminator to wobble 7' from the pole both directions ('south' and 'north'). thus creating seasons with no measurable effects.

Wait...what? Axial tilt for planets is measured relative to the orbital plane of the planet (at least that's how we do it in real life). Are you saying that when they tell us "none of the planets in KSP have any axial tilt," they are NOT referring to axial tilt relative to their orbit? This I must go check...

Edited by Brotoro
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Brotoro

Brotoro

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Wow! SpaceSphereOfDeath is correct. The planets in KSP are NOT aligned perpendicular to their orbital planes. So it is incorrect to say they have no axial tilt (since the axial tilt of a planet is measured relative to its orbital plane). Any planet in KSP that has an inclined orbit has an axial tilt equal to the inclination of its orbit. And a planet with an axial tilt will have the sun show north-south librations, yes. I give unto you a kerbal snack, Mr. S.S.O.D.

You know...this must have freaked out the kerbal astronomers when they learned this.

Edited by Brotoro
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SpaceSphereOfDeath

SpaceSphereOfDeath

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Wow! SpaceSphereOfDeath is correct. The planets in KSP are NOT aligned perpendicular to their orbital planes. So it is incorrect to say they have no axial tilt (since the axial tilt of a planet is measured relative to its orbital plane). Any planet in KSP that has an inclined orbit has an axial tilt equal to the inclination of its orbit. And a planet with an axial tilt will have the sun show north-south librations, yes. I give unto you a kerbal snack, Mr. S.S.O.D.

You know...this must have freaked out the kerbal astronomers when they learned this.

Thank you, I just went to Moho to test it myself (when I posted it was just a theory) and yes, Moho does have observable seasons.

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Geschosskopf

Geschosskopf

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Kpring?

How about:

Oxidizer Season

Explosion Season

Trashcan Exhaust Season

Wheeeee! Season

Why stop at just 4 seasons. Where I live, the traditional calendar has 9 seasons, some of which overlap and all of them tend to be movable feasts.

Football season

Bow season

Blackpowder season

Rifle season

Duck season

Tornado season

Crawfish season

Turkey season

Baseball season

Hurricane season

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Deadpangod3

Deadpangod3

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Why stop at just 4 seasons. Where I live, the traditional calendar has 9 seasons, some of which overlap and all of them tend to be movable feasts.

Football season

Bow season

Blackpowder season

Rifle season

Duck season

Tornado season

Crawfish season

Turkey season

Baseball season

Hurricane season

SRB Season?

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Specialist290

Specialist290

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Why stop at just 4 seasons. Where I live, the traditional calendar has 9 seasons, some of which overlap and all of them tend to be movable feasts.

Football season

Bow season

Blackpowder season

Rifle season

Duck season Rabbit season

Tornado season

Crawfish season

Turkey season

Baseball season

Hurricane season

Sounds about right to me.

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Pds314

Pds314

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There are no seasons in normal terms, the day length is essentially constant, however, some planets and moons do change distance from the sun.

For example, Laythe has one side which recieves dramatically less sun-light than the other, both due to being eclipsed by Jool and to being further away during the day than the night.

Eeloo and Moho have very elliptical orbits, this causes them to get very close or far from the sun relative to their semi-major axis.

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  • 1 year later...
ToneStack

ToneStack

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Wow! SpaceSphereOfDeath is correct. The planets in KSP are NOT aligned perpendicular to their orbital planes. So it is incorrect to say they have no axial tilt (since the axial tilt of a planet is measured relative to its orbital plane). Any planet in KSP that has an inclined orbit has an axial tilt equal to the inclination of its orbit. And a planet with an axial tilt will have the sun show north-south librations, yes. I give unto you a kerbal snack, Mr. S.S.O.D.

You know...this must have freaked out the kerbal astronomers when they learned this.

So... if Kerbin could have it's orbit changed by some mod to have an inclination of 23.5 Deg, and LAN of 0, i would be interested to know

1. at what time during the kerbin year would the sun be at it's most northern point in the sky (aka summer)?

2. what time of year would it be at the very beginning of the game?

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