SpaceAtlas Space Object Data
NASA JPL SBDB · 2011 OJ10

2011 OJ10

2011 OJ10 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 2.142 AU once every 3.13 yr.

Amor Observations: 47
Orbital Period · P
3.13 yr
v(q)
31.1 km/s
v(Q)
13.3 km/s
Diameter · ≈
0.13 km
TJ
3.6
Eccentricity · e
0.3992

Orbit and dynamics

The path is an ellipse reaching 1.287 AU from the Sun at perihelion and 2.997 AU at aphelion, a radial span of 1.71 AU.

Applying Kepler's third law to a = 2.142 AU gives an orbital period of 3.13 yr, or about 1,145 days.

An eccentricity of 0.399 makes the orbit moderately elongated.

The orbital plane is tilted 6.24° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 31.1 km/s at perihelion and falls to 13.3 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 = 22.2 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.13 km.

Observation record and orbit quality

The current orbit solution is based on 47 observations and has a weighted RMS residual of 0.4249 arcseconds.

Condition code U = 1 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
2.142 AU
Eccentricity
0.3992
Perihelion
1.287 AU
Aphelion
2.997086 AU
Inclination
6.24°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
264.23°

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

Predicted close approaches to Earth, from NASA's Center for Near-Earth Object Studies (CNEOS).

Date (UTC)Miss distanceVelocity
2033-Aug-26 15:49 0.407128 AU
60905537 km
3.34 km/s
2058-Jul-25 16:42 0.332896 AU
49800509 km
3.63 km/s

Distances in astronomical units (AU) and kilometres. Source: NASA/JPL CNEOS Close Approach Data API.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
22.2

Orbit Quality

RMS
0.42494
Condition
1
Orbit ID
—
Data source: NASA JPL Small-Body Database · NASA CNEOS. 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.