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I am hoping someone can point me to images of Pluto and Charon with latitude and longitude lines.

I know it's the convention to designate the near point of a tidelocked moon as 0°, 0°. Is the same true of a planet tidelocked with his moon?

I am doing some drawings of the Pluto Charon neighborhood. For example:

enter image description here

The drawings would be more interesting and informative if the Pluto and Charon circles included some features. I am hoping a lobe of Pluto's heart is close to the near point.

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I am not aware of any particular standard for the primary body, however for the Pluto system, in this image the 0,0 point is on the opposite side of the hearth: enter image description here
And in this image, the hearth is shown to also be at the opposite side from Charon.
enter image description here
So I assume you are right.

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