SpaceAtlas Space Object Data
NASA JPL SBDB · 2021 OV2

2021 OV2

2021 OV2 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 2.189 AU once every 3.24 yr.

Amor Observations: 51
Orbital Period · P
3.24 yr
v(q)
34.4 km/s
v(Q)
11.8 km/s
Diameter · ≈
0.17 km
TJ
3.47
Eccentricity · e
0.4888

Orbit and dynamics

The path is an ellipse reaching 1.119 AU from the Sun at perihelion and 3.259 AU at aphelion, a radial span of 2.14 AU.

Applying Kepler's third law to a = 2.189 AU gives an orbital period of 3.24 yr, or about 1,183 days.

The high eccentricity (0.489) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 14.89° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 34.4 km/s at perihelion and falls to 11.8 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 = 21.57 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.17 km.

Observation record and orbit quality

The current orbit solution is based on 51 observations and has a weighted RMS residual of 0.512 arcseconds.

Condition code U = 5 indicates a moderately constrained orbit; predictions decades ahead still carry noticeable uncertainty.

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
2.189 AU
Eccentricity
0.4888
Perihelion
1.119 AU
Aphelion
3.258983 AU
Inclination
14.89°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
192.38°

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
2034-Jul-14 16:20 0.348846 AU
52186640 km
7.90 km/s
2076-Jul-28 17:20 0.202232 AU
30253462 km
13.49 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
21.57

Orbit Quality

RMS
0.51198
Condition
5
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.

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