Thebe

01. Triton Moon Data
Mass (kg) 2.14e+22
Radius (km) 1,350
Density (gm/cm3) 2.07
Distance from Neptune (km) 354,800
Period of rotation (days) -5.87685
Period of orbit (days) -5.87685
Orbital velocity (km/sec) -4.39
Eccentricity of orbit 0.0000
Inclination of orbit (°) 157.35
surface gravity (m/sec2) 3.72
Escape velocity (km/sec) 1.45
Visual albedo 0.7
Visual magnitude 13.47
surface temperature -235°C
Discovered: 1846 W.Lassell

Neptune Moons

02. Nereid Moon Data
Mass (kg) -
Radius (km) 170
Density (gm/cm3) -
Distance from Neptune (km) 5,513,400
Period of rotation (days) -
Period of orbit (days) 360.1362
Orbital velocity (km/sec) 1.12
Eccentricity of orbit 0.7512
Inclination of orbit (°) 27.6
surface gravity (m/sec2) 3.72
Escape velocity (km/sec) 0.0103
Visual albedo 0.14
Visual magnitude 18.7
Discovered: 1949 G.Kuiper

03. Naiad Moon Data
Mass (kg) -
Radius (km) 29
Density (gm/cm3) -
Distance from Neptune (km) 48,000
Period of rotation (days) -
Period of orbit (days) 0.294396
Orbital velocity (km/sec) 11.86
Eccentricity of orbit 0.0003
Inclination of orbit (°) 4.74
Visual albedo 0.06
Visual magnitude 24.7
Discovered: 1989 Voyager Science Team

04. Thalassa Moon Data
Mass (kg) -
Radius (km) 40
Density (gm/cm3) -
Distance from Neptune (km) 50,000
Period of rotation (days) -
Period of orbit (days) 0.311485
Orbital velocity (km/sec) 11.68
Eccentricity of orbit 0.0002
Inclination of orbit (°) 0.21
Visual albedo 0.06
Visual magnitude 23.8
Discovered: 1989 Voyager Science Team

05. Despina Moon Data
Mass (kg) -
Radius (km) 74
Density (gm/cm3) -
Distance from Neptune (km) 52,500
Period of rotation (days) -
Period of orbit (days) 0.334655
Orbital velocity (km/sec) 11.41
Eccentricity of orbit 0.0001
Inclination of orbit (°) 0.07
Visual albedo 0.06
Visual magnitude 22.6
Discovered: 1989 Voyager Science Team

08. Proteus Moon Data
Mass (kg) -
Radius (km) 200
Density (gm/cm3) -
Distance from Neptune (km) 117,600
Period of rotation (days) -
Period of orbit (days) 1.122315
Orbital velocity (km/sec) 7.63
Eccentricity of orbit 0.0004
Inclination of orbit (°) 0.04
Visual albedo 0.06
Visual magnitude 20.3
Discovered: 1989 Voyager Science Team

06. Galatea Moon Data
Mass (kg) -
Radius (km) 79
Density (gm/cm3) -
Distance from Neptune (km) 62,000
Period of rotation (days) -
Period of orbit (days) 0.428745
Orbital velocity (km/sec) 10.52
Eccentricity of orbit 0.0001
Inclination of orbit (°) 0.05
Visual albedo 0.06
Visual magnitude 22.3

07. Larissa Moon Data
Mass (kg) -
Radius (km) 104 x 89
Density (gm/cm3) -
Distance from Neptune (km) 73,600
Period of rotation (days) -
Period of orbit (days) 0.554654
Orbital velocity (km/sec) 9.65
Eccentricity of orbit 0.0014
Inclination of orbit (°) 0.20
Visual albedo 0.06
Visual magnitude 22.0
Discovered: 1989 Voyager Science Team

09.	Halimede	Discovered: 2002	M.Holman, JJ.Kavelaars, T.Grav, W.Fraser, D.Milisavljevic
10.	Neso	Discovered: 2002	M.Holman et al., B.Gladman et al.
11.	Sao	Discovered: 2002	M.Holam, JJKavelaars, T.Grav, W.Fraser, D.Milisavljevic
12.	Laomedeia	Discovered: 2002	M.Holam, JJKavelaars, T.Grav, W.Fraser, D.Milisavljevic
13. 14.	Psamathe Hippocamp	Discovered: 2003 Discovered:	DC.Jewitt, J.Kleyna, SS.Sheppard

Triton

Proteus

Thebe

TOTAL MOONS 14

12. Portia Moon Data
Mass (kg) -
Radius (km) 55
Density (gm/cm3) -
Distance from Uranus (km) 66,100
Period of rotation (days) -
Period of orbit (days) 0.513196
Orbital velocity (km/sec) 9.37
Eccentricity of orbit 0.000
Inclination of orbit (°) 0.09
Visual albedo 0.07
Visual magnitude 21.0
Discovered: 1986 Voyager Science Team