SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 JU2

2020 JU2

2020 JU2 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.651 AU once every 2.12 yr.

Amor Observations: 27
Orbital Period · P
2.12 yr
v(q)
32 km/s
v(Q)
16.8 km/s
Diameter · ≈
0.12 km
TJ
4.04
Eccentricity · e
0.3111

Orbit and dynamics

The path is an ellipse reaching 1.138 AU from the Sun at perihelion and 2.165 AU at aphelion, a radial span of 1.027 AU.

Applying Kepler's third law to a = 1.651 AU gives an orbital period of 2.12 yr, or about 775 days.

An eccentricity of 0.311 makes the orbit moderately elongated.

A steep inclination of 34.17° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 32 km/s at perihelion and falls to 16.8 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 = 22.4 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.12 km.

Observation record and orbit quality

The current orbit solution is based on 27 observations and has a weighted RMS residual of 0.6187 arcseconds.

Condition code U = 9 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
1.651 AU
Eccentricity
0.3111
Perihelion
1.138 AU
Aphelion
2.164626 AU
Inclination
34.17°
Orbital Period
— yr
Epoch
2458986.5
Mean Anomaly
314.27°

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
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
22.4

Orbit Quality

RMS
0.61873
Condition
9
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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