SpaceAtlas Space Object Data
NASA JPL SBDB · 464885

464885

464885 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.49 AU once every 1.82 yr.

Amor Observations: 214
Orbital Period · P
1.82 yr
v(q)
32.1 km/s
v(Q)
18.5 km/s
Diameter · ≈
0.45 km
TJ
4.34
Eccentricity · e
0.2678

Orbit and dynamics

The path is an ellipse reaching 1.091 AU from the Sun at perihelion and 1.889 AU at aphelion, a radial span of 0.798 AU.

Applying Kepler's third law to a = 1.49 AU gives an orbital period of 1.82 yr, or about 664 days.

An eccentricity of 0.268 makes the orbit moderately elongated.

A steep inclination of 34.9° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 32.1 km/s at perihelion and falls to 18.5 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

The measured diameter is 0.38 km, a value from direct size determination rather than from brightness alone.

A geometric albedo of 0.19 points to a comparatively bright, reflective surface.

Observation record and orbit quality

The current orbit solution is based on 214 observations and has a weighted RMS residual of 0.5849 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
1.49 AU
Eccentricity
0.2678
Perihelion
1.091 AU
Aphelion
1.889022 AU
Inclination
34.9°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
232.94°

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
0.384 km
Albedo
0.19
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
19.47

Orbit Quality

RMS
0.58486
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.