SpaceAtlas Space Object Data
NASA JPL SBDB · 366470

366470

366470 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.424 AU once every 1.70 yr.

Amor Observations: 409
Orbital Period · P
1.70 yr
v(q)
33.4 km/s
v(Q)
18.7 km/s
Diameter · ≈
0.45 km
TJ
4.58
Eccentricity · e
0.2823

Orbit and dynamics

Between its closest point (1.022 AU) and its farthest (1.826 AU), the heliocentric distance changes by 0.804 AU over every revolution.

One full revolution takes 1.70 yr (621 days), computed from the semi-major axis of 1.424 AU.

An eccentricity of 0.282 makes the orbit moderately elongated.

A steep inclination of 22.81° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 33.4 km/s at perihelion and falls to 18.7 km/s at aphelion.

Its perihelion lies just outside Earth's orbit, which is why it is classed as Earth-approaching rather than Earth-crossing.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 19.48 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.45 km.

Observation record and orbit quality

Astrometry from 409 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5704 arcseconds.

Condition code U = 0 means the orbit is very well determined, leaving only a small uncertainty in the future ephemeris.

About these computed values

Orbital periods, perihelion and aphelion speeds, and diameter estimates on this page are computed by SpaceAtlas from the JPL SBDB orbital elements. They are derived quantities, not values copied from the source catalogue.

Orbital Parameters

Semi-Major Axis
1.424 AU
Eccentricity
0.2823
Perihelion
1.022 AU
Aphelion
1.825995 AU
Inclination
22.81°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
151.53°

Orbit diagram

The Sun sits at the focus (orange). Earth's orbit is the grey circle at 1 AU. The red dot marks the object's position at the catalog epoch.

3D orbit (interactive)

Drag to rotate; scroll or pinch to zoom. The Sun is at the focus (orange), Earth's orbit is the grey ring at 1 AU, and the red dot marks the object's current position.

Close approaches

No close approaches to Earth are currently on record for this object.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
19.48

Orbit Quality

RMS
0.57038
Condition
0
Orbit ID
—
Data source: NASA JPL Small-Body Database . Orbital periods, perihelion and aphelion speeds, and diameter estimates on this page are computed by SpaceAtlas from the JPL SBDB orbital elements. They are derived quantities, not values copied from the source catalogue.

Keep exploring

Explore asteroids, comets and near-Earth objects with JPL orbital data.