SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 OC8

2020 OC8

2020 OC8 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.913 AU once every 2.65 yr.

Amor Observations: 508
Orbital Period · P
2.65 yr
v(q)
34.4 km/s
v(Q)
13.5 km/s
Diameter · ≈
0.25 km
TJ
3.81
Eccentricity · e
0.4383

Orbit and dynamics

The path is an ellipse reaching 1.075 AU from the Sun at perihelion and 2.751 AU at aphelion, a radial span of 1.676 AU.

Applying Kepler's third law to a = 1.913 AU gives an orbital period of 2.65 yr, or about 966 days.

The high eccentricity (0.438) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

Its inclination of 4.86° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 34.4 km/s at perihelion and falls to 13.5 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

No direct size measurement is available; from an absolute magnitude of H = 20.76 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.25 km.

Observation record and orbit quality

The current orbit solution is based on 508 observations and has a weighted RMS residual of 0.4774 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
1.913 AU
Eccentricity
0.4383
Perihelion
1.075 AU
Aphelion
2.751468 AU
Inclination
4.86°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
41.48°

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-Sep-22 16:54 0.306794 AU
45895745 km
12.64 km/s
2057-Nov-25 13:51 0.336621 AU
50357804 km
12.87 km/s
2065-Oct-13 18:48 0.103300 AU
15453530 km
6.22 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
20.76

Orbit Quality

RMS
0.47739
Condition
0
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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