Charon Circumnavigation

Ian Phillips

Volunteer Moderator
Latitude Longitude Heading
69.00000° 39.00000° 90.00000°

Those figures agree with my workings out in that it gives
270.00° 0.00000° -51.00000° 21.00000°

So the ..... arrrrggghhhh..... My brain hurts

Edit:
I'm currently at (roughly) -74 south and -108 east.

Your sheet shows that I did indeed need to head north again because the great circle I am following reaches its own most southerly point at -69.3697

And on the bearing calculation link, the path I need to follow would be drawn as a sine wave with the top and bottom peaks touching 69.3697 and -69.3697 not as a line that disappears off the bottom of the map.....

Learning things!

So I've zagged south when I didn't need to, and am now way too far south (again).

To get to the 3/4 point on my great circle, my heading is roughly 60 degrees from my current position. (I hope :D)
 
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Robert Maynard

Volunteer Moderator
Latitude Longitude Heading
69.00000° 39.00000° 90.00000°

Those figures agree with my workings out in that it gives
270.00° 0.00000° -51.00000° 21.00000°

So the .. arrrrggghhhh..... My brain hurts
You cannot circumnavigate a planet at 90°/ 270° unless at the equator.

What was your original heading, right at the beginning?
 

Ian Phillips

Volunteer Moderator
No idea! - I went west to find the start of a huge canyon, then later I got a heading of about 155 degrees, but that was from a position well to the south and west of my starting point

edit:
The Bearing link gives a 90 bearing if I enter my start and antipodal points.

Edit 2
i think I'll settle for an initial 135 bearing which would give a 3/4 waypoint of
270.00° 14.67906° -94.03263°

and that is a bearing of 20 degrees, roughly.

good enough, as it is roughly correct, if I draw a sine wave by eye across the map on the bearing link.
 
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Ian Phillips

Volunteer Moderator
So, I woke up early this morning with the answer.

It's already in the thread - A challenge: Who can find it?
 
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Robert Maynard

Volunteer Moderator
This post?

My StatusDisplay app can display distance, bearing and estimated time to arrival to a user defined point on a body's surface - in an overlay window that, according to one user at least, works in VR.

Alternatively:
[tr][td]Distance[/td][td]Latitude[/td][td]Longitude[/td][td]Heading[/td][/tr][tr][td]0.00°[/td][td]69.3697°[/td][td]39.1685°[/td][td]125.87°[/td][/tr][tr][td]6.00°[/td][td]65.3904°[/td][td]50.9047°[/td][td]136.72°[/td][/tr][tr][td]12.00°[/td][td]60.7503°[/td][td]59.3389°[/td][td]144.24°[/td][/tr][tr][td]18.00°[/td][td]55.7176°[/td][td]65.5641°[/td][td]149.54°[/td][/tr][tr][td]24.00°[/td][td]50.4430°[/td][td]70.3365°[/td][td]153.36°[/td][/tr][tr][td]30.00°[/td][td]45.0128°[/td][td]74.1374°[/td][td]156.18°[/td][/tr][tr][td]36.00°[/td][td]39.4785°[/td][td]77.2727°[/td][td]158.29°[/td][/tr][tr][td]42.00°[/td][td]33.8725°[/td][td]79.9419°[/td][td]159.89°[/td][/tr][tr][td]48.00°[/td][td]28.2161°[/td][td]82.2798°[/td][td]161.09°[/td][/tr][tr][td]54.00°[/td][td]22.5240°[/td][td]84.3810°[/td][td]162.00°[/td][/tr][tr][td]60.00°[/td][td]16.8068°[/td][td]86.3152°[/td][td]162.65°[/td][/tr][tr][td]66.00°[/td][td]11.0726°[/td][td]88.1356°[/td][td]163.09°[/td][/tr][tr][td]72.00°[/td][td]5.3279°[/td][td]89.8859°[/td][td]163.34°[/td][/tr][tr][td]78.00°[/td][td]-0.4217°[/td][td]91.6036°[/td][td]163.41°[/td][/tr][tr][td]84.00°[/td][td]-6.1709°[/td][td]93.3238°[/td][td]163.31°[/td][/tr][tr][td]90.00°[/td][td]-11.9144°[/td][td]95.0819°[/td][td]163.03°[/td][/tr][tr][td]96.00°[/td][td]-17.6466°[/td][td]96.9161°[/td][td]162.57°[/td][/tr][tr][td]102.00°[/td][td]-23.3607°[/td][td]98.8711°[/td][td]161.88°[/td][/tr][tr][td]108.00°[/td][td]-29.0483°[/td][td]101.0023°[/td][td]160.94°[/td][/tr][tr][td]114.00°[/td][td]-34.6984°[/td][td]103.3821°[/td][td]159.68°[/td][/tr][tr][td]120.00°[/td][td]-40.2954°[/td][td]106.1100°[/td][td]158.02°[/td][/tr][tr][td]126.00°[/td][td]-45.8168°[/td][td]109.3284°[/td][td]155.82°[/td][/tr][tr][td]132.00°[/td][td]-51.2280°[/td][td]113.2494°[/td][td]152.88°[/td][/tr][tr][td]138.00°[/td][td]-56.4736°[/td][td]118.1994°[/td][td]148.87°[/td][/tr][tr][td]144.00°[/td][td]-61.4603°[/td][td]124.6933°[/td][td]143.30°[/td][/tr][tr][td]150.00°[/td][td]-66.0239°[/td][td]133.5362°[/td][td]135.36°[/td][/tr][tr][td]156.00°[/td][td]-69.8733°[/td][td]145.8602°[/td][td]123.93°[/td][/tr][tr][td]162.00°[/td][td]-72.5283°[/td][td]162.6513°[/td][td]108.02°[/td][/tr][tr][td]168.00°[/td][td]-73.4046°[/td][td]-176.9813°[/td][td]88.52°[/td][/tr][tr][td]174.00°[/td][td]-72.2370°[/td][td]-156.9513°[/td][td]69.37°[/td][/tr][tr][td]180.00°[/td][td]-69.3697°[/td][td]-140.8315°[/td][td]54.13°[/td][/tr][tr][td]186.00°[/td][td]-65.3904°[/td][td]-129.0953°[/td][td]43.28°[/td][/tr][tr][td]192.00°[/td][td]-60.7503°[/td][td]-120.6611°[/td][td]35.76°[/td][/tr][tr][td]198.00°[/td][td]-55.7176°[/td][td]-114.4359°[/td][td]30.46°[/td][/tr][tr][td]204.00°[/td][td]-50.4430°[/td][td]-109.6635°[/td][td]26.64°[/td][/tr][tr][td]210.00°[/td][td]-45.0128°[/td][td]-105.8626°[/td][td]23.82°[/td][/tr][tr][td]216.00°[/td][td]-39.4785°[/td][td]-102.7273°[/td][td]21.71°[/td][/tr][tr][td]222.00°[/td][td]-33.8725°[/td][td]-100.0581°[/td][td]20.11°[/td][/tr][tr][td]228.00°[/td][td]-28.2161°[/td][td]-97.7202°[/td][td]18.91°[/td][/tr][tr][td]234.00°[/td][td]-22.5240°[/td][td]-95.6190°[/td][td]18.00°[/td][/tr][tr][td]240.00°[/td][td]-16.8068°[/td][td]-93.6848°[/td][td]17.35°[/td][/tr][tr][td]246.00°[/td][td]-11.0726°[/td][td]-91.8644°[/td][td]16.91°[/td][/tr][tr][td]252.00°[/td][td]-5.3279°[/td][td]-90.1141°[/td][td]16.66°[/td][/tr][tr][td]258.00°[/td][td]0.4217°[/td][td]-88.3964°[/td][td]16.59°[/td][/tr][tr][td]264.00°[/td][td]6.1709°[/td][td]-86.6762°[/td][td]16.69°[/td][/tr][tr][td]270.00°[/td][td]11.9144°[/td][td]-84.9181°[/td][td]16.97°[/td][/tr][tr][td]276.00°[/td][td]17.6466°[/td][td]-83.0839°[/td][td]17.43°[/td][/tr][tr][td]282.00°[/td][td]23.3607°[/td][td]-81.1289°[/td][td]18.12°[/td][/tr][tr][td]288.00°[/td][td]29.0483°[/td][td]-78.9977°[/td][td]19.06°[/td][/tr][tr][td]294.00°[/td][td]34.6984°[/td][td]-76.6179°[/td][td]20.32°[/td][/tr][tr][td]300.00°[/td][td]40.2954°[/td][td]-73.8900°[/td][td]21.98°[/td][/tr][tr][td]306.00°[/td][td]45.8168°[/td][td]-70.6716°[/td][td]24.18°[/td][/tr][tr][td]312.00°[/td][td]51.2280°[/td][td]-66.7506°[/td][td]27.12°[/td][/tr][tr][td]318.00°[/td][td]56.4736°[/td][td]-61.8006°[/td][td]31.13°[/td][/tr][tr][td]324.00°[/td][td]61.4603°[/td][td]-55.3067°[/td][td]36.70°[/td][/tr][tr][td]330.00°[/td][td]66.0239°[/td][td]-46.4638°[/td][td]44.64°[/td][/tr][tr][td]336.00°[/td][td]69.8733°[/td][td]-34.1398°[/td][td]56.07°[/td][/tr][tr][td]342.00°[/td][td]72.5283°[/td][td]-17.3487°[/td][td]71.98°[/td][/tr][tr][td]348.00°[/td][td]73.4046°[/td][td]3.0187°[/td][td]91.48°[/td][/tr][tr][td]354.00°[/td][td]72.2370°[/td][td]23.0487°[/td][td]110.63°[/td][/tr][tr][td]360.00°[/td][td]69.3697°[/td][td]39.1685°[/td][td]125.87°[/td][/tr]​
 
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