Orbital Distance (a=AU/1000)	Orbital Period (P=days)	Orbital Eccentricity (e)	Orbital Inclination (i=degrees)	Mass (Earths)	Diameter (Earths)	Density (Earths)	Surface Gravity (Earths)
Neptune	0.0	...	...	...	17.2	3.9	0.30	1.19
1989M3R Ring	0.280	...	0?	0?	...	...	...	...
Naiad	0.321	0.294	0.0003	4.74	...	0.0045	...	...
Thalassa	0.334	0.311	0.0002	0.21	...	0.0063	...	...
Despina	0.351	0.335	0.0001	0.07	...	0.012	...	...
1989M2R Ring	0.356	...	0?	0?	...	...	...	...
1989M4R Ring	0.360	...	0?	0?	...	...	...	...
Galatea	0.414	0.429	0.0001	0.05	...	0.012	...	...
1989M1R Ring	0.421	...	0?	0?	...	...	...	...
Larissa	0.492	0.555	0.0014	0.06	...	0.16	...	...
Proteus	0.786	1.12	0.0004	0.04	...	0.31	...	...
Triton	2.37	5.88	0.0000	157.4	0.0036	0.21	0.40	...
Nereid	36.9	360	0.7512	27.6	...	0.27	...	...