Comet Crommelin is a comet, a celestial body that travels in from the far reaches of the cosmos that when it gets closer to the sun begins to burn away and produce a long tail. It is composed mainly of ice and dust. Its orbit takes 27.89 years to travel round the Sun.
The absolute magnitude of the object is 12 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 closest the Comet came to its orbitting target was 1984-09-01 at which point it was 0.743 A.U. distance away.The Semi-Major Axis of the orbit is 9.2, which is the furthest point from the centre to the edge of an elliptical point.
The orbital inclination, the angle at which Comet Crommelin orbits in relation to the orbital plane is 29 degrees. The orbital eccentricity is 0.919, it is the degree at which Comet Crommelin orbits close to a circular (0) orbit as opposed to an elliptical (1) orbit.