In article ,
Tequila wrote:
Have astronomers agreed on a definition of
Titan's (surface feature) longitude?

:-) ....no.

If so, how was that done?
Voyager, Aricebo, ground telescopes?

Titan most likely has bound rotation relative to Saturn, as
does most other natural satellites in the solar system relative
to their respective primary planets. Thus a natural zero longitude
for Titan would be the longitude which, on the average, faces Saturn
most closely.




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