Aphelion Distance

Some articles on distance, aphelion distance:

Number and Classification of Near-Earth Objects - Near-Earth Asteroids
... are divided into groups based on their semi-major axis (a), perihelion distance (q), and aphelion distance (Q) The Atiras or Apohele asteroids have ... (1.017 AU is Earth's aphelion distance.) The Amors have orbits strictly outside Earth's orbit an Amor asteroid's perihelion distance (q) is greater than Earth's aphelion distance (1.017 AU) ...

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