Usina de Letras

The Neptunian moons are listed here by its orbital period, from shortest to longest. Triton, which is not only massive enough for its surface to have collapsed into a sphere, but is comparable in size to our own moon, is highlighted in purple. Irregular (captured) moons are shown in grey; prograde in light grey and retrograde in dark grey. (Triton is also thought to be captured.)

Order ^{[note 1]}	Label ^{[note 2]}	Name	Pronunciation (key)	Diameter (km) ^{[note 3]}	Mass (×10¹⁶kg)^{[note 4]}	Semi-major axis (km)^[8]	Orbital period (d)^[8]	Inclination (°)^[8]^{[note 5]}	Eccentricity ^[8]	Discovery year^[7]
1	Neptune III	Naiad	ËˆneÉª.É™d	66 (96 × 60 × 52)	19	48,227	0.294	4.691	0.0003	1989
2	Neptune IV	Thalassa	θÉ™ËˆlæsÉ™	82 (108 × 100 × 52)	35	50,074	0.311	0.135	0.0002	1989
3	Neptune V	Despina	dÉ¨sËˆpiËnÉ™	150 (180 × 148 × 128)	210	52,526	0.335	0.068	0.0002	1989
4	Neptune VI	Galatea	ËŒÉ¡ælÉ™ËˆtiËÉ™	176 (204 × 184 × 144)	212	61,953	0.429	0.034	0.0001	1989
5	Neptune VII	Larissa	lÉ™ËˆrÉªsÉ™	194 (216 × 204 × 168)	460	73,548	0.555	0.205	0.0014	1981
6	Neptune XIV	Hippocamp	ËˆhÉªpoÊŠkæmp	~18^[9]	n/a	104,200^{[note 6]}	0.9362^[9]	~ 0.0	~ 0.000	2013
7	Neptune VIII	Proteus	ËˆproÊŠtiÉ™s	420 (436 × 416 × 402)	4,400	117,646	1.122	0.075	0.0005	1989
8	Neptune I	Triton ^♠	ËˆtraÉªtÉ™n	2,705.2 ± 4.8 (2,709 × 2,706 × 2,705)	2,140,800 ± 5200	354,759	5.877	156.865	0.0	1846
9	Neptune II	Nereid	ËˆnÉªÉ™riË.Éªd	340 ± 50	2,700	5,513,818	360.13	7.090	0.7507	1949
10	Neptune IX	Halimede^♠	ËŒhælÉ¨ËˆmiËdiË	62	16	16,611,000	1,879.08	112.712	0.2646	2002
11	Neptune XI	Sao	ËˆseÉª.oÊŠ	44	5.8	22,228,000	2,912.72	53.483	0.1365	2002
12	Neptune XII	Laomedeia	ËŒleÉª.ÉµmÉ¨ËˆdiËÉ™	42	5.0	23,567,000	3,171.33	37.874	0.3969	2002
13	Neptune X	Psamathe^♠	ËˆsæmÉ™θiË	40	4.4	48,096,000	9,074.30	126.312	0.3809	2003
14	Neptune XIII	Neso ^♠	ËˆniËsoÊŠ	60	15	49,285,000	9,740.73	136.439	0.5714

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