SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 OK1

2020 OK1

2020 OK1 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.578 AU once every 1.98 yr.

Amor Observations: 22
Orbital Period · P
1.98 yr
v(q)
31.7 km/s
v(Q)
17.8 km/s
Diameter · ≈
0.06 km
TJ
4.34
Eccentricity · e
0.2812

Orbit and dynamics

The path is an ellipse reaching 1.134 AU from the Sun at perihelion and 2.022 AU at aphelion, a radial span of 0.888 AU.

Applying Kepler's third law to a = 1.578 AU gives an orbital period of 1.98 yr, or about 724 days.

An eccentricity of 0.281 makes the orbit moderately elongated.

The orbital plane is tilted 10.25° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 31.7 km/s at perihelion and falls to 17.8 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 = 24 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.06 km.

Observation record and orbit quality

The current orbit solution is based on 22 observations and has a weighted RMS residual of 0.5782 arcseconds.

Condition code U = 7 signals a poorly constrained orbit, so its future path should be treated as provisional.

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
1.578 AU
Eccentricity
0.2812
Perihelion
1.134 AU
Aphelion
2.021734 AU
Inclination
10.25°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
326.05°

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
2028-Aug-14 19:20 0.430254 AU
64365088 km
13.58 km/s
2028-Nov-10 04:56 0.430417 AU
64389455 km
3.83 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
24.0

Orbit Quality

RMS
0.57822
Condition
7
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

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