Universe Guide

(121725) Aphidas Asteroid

Aphidas is an asteroid, a large rock that orbits the Sun mainly between the orbits of Mars and Jupiter. They tend to be an irregular shaped but Ceres asteroid is known to be spherical in shape but because it doesn't clear its path round the Sun, it is only a dwarf planet. It has an alternative name which is 1999 XX143.

Aphidas was discovered on 1999-12-13 by C. W. Hergenrother.

The absolute magnitude of the object is 8.6 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 albedo of the object is 1. The Albedo is the amount of radiation that is reflected back into space by the object.

The Aphelion of the object is 26.277 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 9.616 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 103.9 degrees. The Argument of Perihelion is 215.6. 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 216.5, is the angular distance of the planet from the perihelion or aphelion. Ref:Dictionary.The Semi-Major Axis of the orbit is 17.947, which is the furthest point from the centre to the edge of an elliptical point.

The orbital inclination, the angle at which Aphidas orbits in relation to the orbital plane is 6.8 degrees. The orbital eccentricity is 0.464, it is the degree at which Aphidas orbits close to a circular (0) orbit as opposed to an elliptical (1) orbit.

Aphidas Facts

Alternative Name1999 XX143
Asteroid TypeCentaur
Date of Discovery1999-12-13
DiscovererC. W. Hergenrother
Absolute Magnitude8.6
Aphelion (Furthest)26.277 A.U.
Perihelion (Nearest)9.616 A.U.
Longitude Of Ascending Node103.9
Argument of Perihelion215.6
Mean Anomoly216.5
Semi-Major Axis17.947
Orbital Inclination (degrees)6.8
Orbital Eccentricity0.464

Comments and Questions

There's no register feature and no need to give an email address if you don't need to. All messages will be reviewed before being displayed. Comments may be merged or altered slightly such as if an email address is given in the main body of the comment.

You can decline to give a name which if that is the case, the comment will be attributed to a random star. A name is preferred even if its a random made up one by yourself.

This website is using cookies. More info. That's Fine