Translation guide
Describes orbital or rotational motion in the same direction as the primary body's rotation, or forward motion in a general sense. In astronomy, it contrasts with retrograde motion.
The standard astronomical term for motion in the same direction as the rotating primary (e.g., a planet orbiting in the same direction as the Sun's rotation).
The standard astronomical term for prograde motion, used for both orbital and rotational motion. Often paired with 逆行 (retrograde).
Describes moving forward or progressing in a non-astronomical context, often metaphorically.
The English term 'prograde motion' is highly technical and primarily used in astronomy. In everyday contexts, use 前進 or 進行 for forward motion/progress. Do not use 順行 outside of astronomical or technical discussions.
この惑星は順行している。
This planet is in prograde motion.
Explicitly states 'prograde motion', used in more technical contexts.
The satellite's prograde motion was observed.
General term for forward movement or progress. Can be used for physical motion or abstract advancement.
The project is making progress.
Implies moving forward or proceeding, often used for processes or events.
The construction is proceeding smoothly.