declinational
/ˌdɛklɪˈneɪʃənəl/
adjective
- Relating to declination, especially the angular distance of a celestial body or magnetic variation.
- Navigators use declinational tables to correct their compass readings.
- The declinational offset must be calibrated before using the sextant.
- The telescope's declinational axis allows it to track stars across the sky.