How to convert degree to kilometres

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NinhTH

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Hello friend,
Do you know how to convert 1 degree to kilometres in space?
Ex: one satellite orbit is 130E and another 131E so how many kilometre between two satelite? thank you
 
Distance of geostationary orbit to earth equator + distance from earth surface to the centre of the earth's core is your radius. Then work out diameter of a circle based on that radius, then divide by 360 for distance per degree. Of course that is distance around the circle's diameter, not in a straight line as the alien flies.
 
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en.wikipedia.org

Geostationary orbit - Wikipedia

en.wikipedia.org en.wikipedia.org
Clarke belt radius is 6378 km (earth at equator) + 35786 km (GEO altitude) = 42164 km.
Clarke belt circumference is 2 * pi * 42164 = 264924 km
1 degree on the belt is 264924 / 360 = 736 km
Note: this is the distance as measured on the belt (curved).

Distance in a straight line is
2 * 42164 * sin ( degree difference / 2 )
 
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Nobody has mentioned Radians yet?


(Whoops, I just did, but think I might have got away with it)
 
Wont be accurate to more than a few kms anyway seeing as every satellite moves continually around its nominal slot.
 
hvdh said:
en.wikipedia.org

Geostationary orbit - Wikipedia

en.wikipedia.org en.wikipedia.org
Clarke belt radius is 6378 km (earth at equator) + 35786 km (GEO altitude) = 42164 km.
Clarke belt circumference is 2 * pi * 42164 = 264924 km
1 degree on the belt is 264924 / 360 = 736 km
Note: this is the distance as measured on the belt (curved).

Distance in a straight line is
2 * 42164 * sin ( degree difference / 2 )
Click to expand...
Thank you so much
 
Been there, not much going on these days.
 
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