SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 WZ2

2020 WZ2

2020 WZ2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.136 AU it takes 1.21 yr to circle the Sun.

Apollo Observations: 65
Orbital Period · P
1.21 yr
v(q)
32.3 km/s
v(Q)
24.2 km/s
Diameter · ≈
0.01 km
TJ
5.5
Eccentricity · e
0.1422

Orbit and dynamics

The path is an ellipse reaching 0.974 AU from the Sun at perihelion and 1.298 AU at aphelion, a radial span of 0.324 AU.

Applying Kepler's third law to a = 1.136 AU gives an orbital period of 1.21 yr, or about 442 days.

An eccentricity of 0.142 makes the orbit moderately elongated.

The orbital plane is tilted 6.71° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 32.3 km/s at perihelion and falls to 24.2 km/s at aphelion.

Because q < 1 AU and Q > 1 AU, this orbit geometrically intersects the region of Earth's orbit.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 28.1 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

The current orbit solution is based on 65 observations and has a weighted RMS residual of 0.3096 arcseconds.

Condition code U = 6 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
1.136 AU
Eccentricity
0.1422
Perihelion
0.974 AU
Aphelion
1.297539 AU
Inclination
6.71°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
235.21°

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
2043-Nov-16 01:47 0.000065 AU
9691 km
4.19 km/s
2049-Dec-05 04:00 0.090376 AU
13519987 km
8.69 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
28.1

Orbit Quality

RMS
0.30959
Condition
6
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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