Abbreviation |
Title |
Description |
COM |
Comet |
Comet orbit not matching any defined orbit class. |
CTc |
Chiron-type Comet |
Chiron-type comet, as defined by Levison and Duncan (TJupiter > 3; a > aJupiter). |
ETc |
Encke-type Comet |
Encke-type comet, as defined by Levison and Duncan (TJupiter > 3; a < aJupiter). |
HTC |
Halley-type Comet* |
Halley-type comet, classical definition (20 y < P < 200 y). |
HYP |
Hyperbolic Comet |
Comets on hyperbolic orbits (e > 1.0). |
JFc |
Jupiter-family Comet |
Jupiter-family comet, as defined by Levison and Duncan (2 < TJupiter < 3). |
JFC |
Jupiter-family Comet* |
Jupiter-family comet, classical definition (P < 20 y). |
PAR |
Parabolic Comet |
Comets on parabolic orbits (e = 1.0). |
Abbreviation |
Title |
Description |
AMO |
Amor |
Near-Earth asteroid orbits similar to that of 1221 Amor (a > 1.0 AU; 1.017 AU < q < 1.3 AU). |
APO |
Apollo |
Near-Earth asteroid orbits which cross the Earth's orbit similar to that of 1862 Apollo (a > 1.0 AU; q < 1.017 AU). |
AST |
Asteroid |
Asteroid orbit not matching any defined orbit class. |
ATE |
Aten |
Near-Earth asteroid orbits similar to that of 2062 Aten (a < 1.0 AU; Q > 0.983 AU). |
CEN |
Centaur |
Objects with orbits between Jupiter and Neptune (5.5 AU < a < 30.1 AU). |
HYA |
Hyperbolic Asteroid |
Asteroids on hyperbolic orbits (e > 1.0). |
IEO |
Interior Earth Object |
An asteroid orbit contained entirely within the orbit of the Earth (Q < 0.983 AU). |
IMB |
Inner Main-belt Asteroid |
Asteroids with orbital elements constrained by (a < 2.0 AU; q > 1.666 AU). |
MBA |
Main-belt Asteroid |
Asteroids with orbital elements constrained by (2.0 AU < a < 3.2 AU; q > 1.666 AU). |
MCA |
Mars-crossing Asteroid |
Asteroids that cross the orbit of Mars constrained by (1.3 AU < q < 1.666 AU; a < 3.2 AU). |
OMB |
Outer Main-belt Asteroid |
Asteroids with orbital elements constrained by (3.2 AU < a < 4.6 AU). |
PAA |
Parabolic Asteroid |
Asteroids on parabolic orbits (e = 1.0). |
TJN |
Jupiter Trojan |
Asteroids traped in Jupiter's L4/L5 Lagrange points (4.6 AU < a < 5.5 AU; e < 0.3). |
TNO |
TransNeptunian Object |
Objects with orbits outside Neptune (a > 30.1 AU). |