Navajo is an asteroid in a
cometary orbit (ACO), with no observable
coma but with a
Tisserand's parameter just below the defined
the threshold of 3.0. ACO's may be
extinct comets. It is a member of the small dynamical
Griqua group, a marginally unstable group of asteroids observed in the
Hecuba gap, a
2:1 resonant zone with the gas giant
Jupiter. The group is named after its largest member,
1362 Griqua.
Navajo is a non-
family asteroid from the main belt's
background population. It orbits the Sun in the
outermost asteroid belt at a distance of 1.7–4.8
AU once every 5 years and 9 months (2,112 days;
semi-major axis of 3.22 AU). Its orbit has a high
eccentricity of 0.48 and an
inclination of 3
° with respect to the
ecliptic. The body's
observation arc begins with a
precovery taken at
Siding Spring Observatory, just weeks before its official discovery observation at Anderson Mesa. == Physical characteristics ==