SpaceAtlas Space Object Data
NASA JPL SBDB · 2022 WA2

2022 WA2

2022 WA2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.36 AU it takes 1.59 yr to circle the Sun.

Apollo Observations: 40
Orbital Period · P
1.59 yr
v(q)
38.5 km/s
v(Q)
16.9 km/s
Diameter · ≈
0.02 km
TJ
4.77
Eccentricity · e
0.3901

Orbit and dynamics

The path is an ellipse reaching 0.83 AU from the Sun at perihelion and 1.891 AU at aphelion, a radial span of 1.061 AU.

Applying Kepler's third law to a = 1.36 AU gives an orbital period of 1.59 yr, or about 579 days.

An eccentricity of 0.39 makes the orbit moderately elongated.

Its inclination of 0.88° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 38.5 km/s at perihelion and falls to 16.9 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 = 26.48 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

The current orbit solution is based on 40 observations and has a weighted RMS residual of 0.4634 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
1.36 AU
Eccentricity
0.3901
Perihelion
0.83 AU
Aphelion
1.890536 AU
Inclination
0.88°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
53.11°

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
2030-Oct-30 16:47 0.324323 AU
48517976 km
22.57 km/s
2034-Apr-11 17:24 0.015221 AU
2277082 km
12.41 km/s
2053-Apr-29 01:05 0.260532 AU
38975021 km
21.59 km/s
2061-Apr-04 04:51 0.015344 AU
2295481 km
9.72 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
26.48

Orbit Quality

RMS
0.46336
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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