Universe Guide


Sila-Nunam is a Kuiper Belt object, a large rock that orbits round outside the orbit of Neptune. It has been categorised as a object. It has an alternative name which is 1997 CS29.

Sila-Nunam was discovered on 1997-02-03 by J. X. Luu, D. C. Jewitt, C. A. Trujillo, J. Chen.

The absolute magnitude of the object is 5.3 which is the brightness of the object. A higher absolute magnitude means that the object is faint whereas a very low number means it is very bright.

The Aphelion of the object is 44.224 A.U. which is the point in the orbit that is furthest from the object that it is orbit. At this point, it will then return back to the orbit target. The Perihelion of the object is 43.276 A.U. which is the point in the orbit that is closest to the object that it is orbit around. The Longitude of Ascending Node of the object is 304.4 degrees. The Argument of Perihelion is 248.5. It is the angle along the orbit of a planet or other Solar System object as measured from the ascending node (analogous to right ascension and longitude) Ref:Hawaii.

The mean anomoly is 310.1, is the angular distance of the planet from the perihelion or aphelion. Ref:Dictionary.The Semi-Major Axis of the orbit is 43.750, which is the furthest point from the centre to the edge of an elliptical point.

The orbital inclination, the angle at which Sila-Nunam orbits in relation to the orbital plane is 2.3 degrees. The orbital eccentricity is 0.011, it is the degree at which Sila-Nunam orbits close to a circular (0) orbit as opposed to an elliptical (1) orbit.

Sila-Nunam Facts

TypeKuiper Belt Object
Alternative Name1997 CS29
Date of Discovery1997-02-03
DiscovererJ. X. Luu, D. C. Jewitt, C. A. Trujillo, J. Chen
Absolute Magnitude5.3
Aphelion (Furthest)44.224 A.U.
Perihelion (Nearest)43.276 A.U.
Longitude Of Ascending Node304.4
Argument of Perihelion248.5
Mean Anomoly310.1
Semi-Major Axis43.750
Orbital Inclination (degrees)2.3
Orbital Eccentricity0.011

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