SpaceAtlas Space Object Data
NASA JPL SBDB · 458135

458135

458135 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 2.066 AU once every 2.97 yr.

Amor Observations: 182
Orbital Period · P
2.97 yr
v(q)
34.4 km/s
v(Q)
12.5 km/s
Diameter · ≈
0.31 km
TJ
3.55
Eccentricity · e
0.4678

Orbit and dynamics

The path is an ellipse reaching 1.1 AU from the Sun at perihelion and 3.032 AU at aphelion, a radial span of 1.932 AU.

Applying Kepler's third law to a = 2.066 AU gives an orbital period of 2.97 yr, or about 1,085 days.

The high eccentricity (0.468) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 21.61° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 34.4 km/s at perihelion and falls to 12.5 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 0.3 km, a value from direct size determination rather than from brightness alone.

A geometric albedo of 0.23 points to a comparatively bright, reflective surface.

Observation record and orbit quality

The current orbit solution is based on 182 observations and has a weighted RMS residual of 0.5668 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
2.066 AU
Eccentricity
0.4678
Perihelion
1.1 AU
Aphelion
3.032475 AU
Inclination
21.61°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
152.34°

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
0.304 km
Albedo
0.23
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
20.27

Orbit Quality

RMS
0.56682
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.

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