FindOrb Elements
Hills Observatory: 1 January 2013 to 6 May 2018
FindOrb online version Perilhelion = Date when closest to the sun Epoch = Date of calculations M = Mean Anomaly; the product of an orbiting body's mean motion and time past perihelion passage n = Mean motion in degrees per day Peri = (P/Q) = angle in the body's orbit plane between the ascending node line and perihelion measured in the direction of the body's orbit a = semi-major axis of an orbit ellipse = half the length of the major axis in AU Node = (P/Q) = angle between the reference X-direction (typically the vernal equinox) and the point at which the body passes up (north) through the reference plane e = eccentricity of the orbit ellipse; e = 0 is circular, e = 1 is parabolic Incl = (P/Q) angle between the vectors normal to the body's orbit plane and the specified reference plane. Typical reference planes are the ecliptic plane and the equatorial plane P = Period (years) H = Absolute Magnitude; magnitude of an asteroid at zero phase angle and at unit heliocentric and geocentric distances G = magnitude slope parameter q = Perihelion Distance; distance in AU between the orbiting body and the sun at it's closest approach Q = Aphelion Distance; distance in AU between the orbiting body and the sun at it's greatest distance
COMETS COMETS
DEEP SKY DEEP SKY