Cyadon 2

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Cyadon 2 Neptune monogram (fixed width).svg
Cyadon 2(space).png
Designations
H3 Haven
Orbital characteristics
Periapsis664862 km
Apoapsis676938 km
670900 km
Eccentricity0.0094
3.551181 d (84 h, 302.400 s)
15.334 km/s
Inclination0.34854° (to Cyadon's equator)
Satellite ofCyadon
Physical characteristics
Mean radius
1825 km
41910000 km2
Volume2.53×1010 km3
Mass8.931938×1022 kg
Mean density
1.942 g/cm3
1.352 m/s2 (0.138 g) (0.835 Moon's)
0.3414±0.0005(estimate)
2.641 km/s (0.236 Earth's) (1.11 Moon's)
Synchronous
Zero (to the orbital plane)
Albedo0.22
Temperature175.9 K (−97.2 °C)
8.2 to 9.0
Atmosphere
Surface pressure
121.3 kPa (1.2 atm)
Composition by volumeVariable

Stratosphere:
98.4% nitrogen (N2),
1.4% methane (CH4),
0.2% hydrogen (H2);

Lower troposphere:
95.0% N2, 4.9% CH4;

Cyadon 2, is the second closest satellit to Cyadon and ranks third in size among the satellites of Cyadon, is the only body in the Tau Lanus System besides Kelera for which the stable existence of liquid on the surface has been proven, and the only satellite of the planet with a dense atmosphere. There is a working colony on the satellite for the maintenance of an autonomous helium-3 extraction station located between the low orbit and the upper atmosphere of the ice (gas) giant Cyadon and further transportation of helium-3 on planet of Kelera.