Neptunicentric en · ADJ
Etymology
From Neptune + -centric.
Meanings
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(not-comparable, rare) Appearing as if seen from the centre of the planet Neptune; relating or referring to Neptune as a centre.
The elements are calculated for direct motion; accordingly it will be noticed that the actual Neptunicentric motion of the satellite is retrograde — a circumstance which, except in the case of the Uranian satellites, is without parallel in the solar system as regards either planets or satellites; though there are many retrograe comets.
1889, George Frederick Chambers, A Handbook of Descriptive and Practical Astronomy: