|date of the discovery||1949|
|data of the orbit|
|middle course radius||5.513.400 km|
|scan time||360.1362 days|
|natural satellite||of the Neptun|
|surface||360,000 km 2|
|mass||3,1×10 19 kg|
|of density||1.5 g/cm 3|
|gravitation at the surface||0.07 m/s 2|
|escape velocity||0.16 km/s|
|Sideri rotation||11.52 hours|
|atmospheric pressure||0 kPa|
Table of contents
on a strongly elliptical course between 1.353.600 and 9.623.700 km circles course data Nereid in approximately 360 days and 3 hours. The course eccentricity amounts to 0,76; this is the exzentrischste well-known course of a moon in the solar system. The course is bent 27,6° in relation to the equator of the Neptun.
The irregular course could be a note for the fact that Nereid was originally an object of the Kuipergürtels, which was caught by the gravitation strength of the Neptun. Another explanation would be that Nereids is to due unusual course to gravitative disturbances of the largest Neptunmondes triton.
a middle diameter of
340 km and is thereby the third biggest Neptunmond has structure and physical data Nereid. In approximately 11 hours and 31 minutes it rotates around the own axle.