Findings:
- Heliocentric
- heliocentric (user)
- longitude
- Board of Longitude
- Longitude capsules
- Longitudes & Attitudes
- Latitude and Longitude
- Lack of Longitude: the Forgotten Hazard of the Age of Sail
If you Log in you could create a "Heliocentric longitude" node. If you don't already have an account, you can register here.