{"action":"opened","issue":{"url":"https://api.github.com/repos/MaraRinn/My-KSP-kOS-scripts/issues/1","repository_url":"https://api.github.com/repos/MaraRinn/My-KSP-kOS-scripts","labels_url":"https://api.github.com/repos/MaraRinn/My-KSP-kOS-scripts/issues/1/labels{/name}","comments_url":"https://api.github.com/repos/MaraRinn/My-KSP-kOS-scripts/issues/1/comments","events_url":"https://api.github.com/repos/MaraRinn/My-KSP-kOS-scripts/issues/1/events","html_url":"https://github.com/MaraRinn/My-KSP-kOS-scripts/issues/1","id":314619450,"number":1,"title":"Inconsistent Anomalies","user":{"login":"MaraRinn","id":43090,"avatar_url":"https://avatars1.githubusercontent.com/u/43090?v=4","gravatar_id":"","url":"https://api.github.com/users/MaraRinn","html_url":"https://github.com/MaraRinn","followers_url":"https://api.github.com/users/MaraRinn/followers","following_url":"https://api.github.com/users/MaraRinn/following{/other_user}","gists_url":"https://api.github.com/users/MaraRinn/gists{/gist_id}","starred_url":"https://api.github.com/users/MaraRinn/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/MaraRinn/subscriptions","organizations_url":"https://api.github.com/users/MaraRinn/orgs","repos_url":"https://api.github.com/users/MaraRinn/repos","events_url":"https://api.github.com/users/MaraRinn/events{/privacy}","received_events_url":"https://api.github.com/users/MaraRinn/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2018-04-16T12:00:08Z","updated_at":"2018-04-16T12:00:08Z","closed_at":null,"author_association":"OWNER","body":"I have a ship in an orbit basically described as this:\r\n\r\n- Orbiting Minmus\r\n- Longitude of Ascending Node is 29.05º\r\n- Argument of Periapsis is 304.955º\r\n- Eccentricity is 0.944\r\n- Inclination 4.536º\r\n- Periapsis 4.527km\r\n- Apoapsis 2.1661Mm\r\n\r\nThe given True anomaly and Mean anomaly are 188.85º and 269.63 respectively.\r\n\r\nEccentricAnomalyFromTrueAnomaly(true, eccentricity) returns about 228.9º.  Deriving True anomaly from this value results in a derived True anomaly very close to the original. Deriving Mean anomaly from this value results in a derived mean anomaly close to 229.7º\r\n\r\nEccentricAnomalyFromMeanAnomaly(mean, eccentricity) returns about 268.8º (which seems suspiciously close to the mean anomaly). Deriving Mean anomaly from this value results in a mean anomaly of about 268.8º with very close tolerance. Deriving True anomaly from this value results in a true anomaly closer to 199º.\r\n\r\nIs is supposed to be theoretically possible to derive Mean from True and vice versa? Shouldn't the eccentric anomaly in both cases be the same, given it's the same object in the same orbit?\r\n"}}
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