SpaceAtlas Space Object Data
NASA JPL SBDB · 2022 AA

2022 AA

2022 AA belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.29 AU it takes 1.47 yr to circle the Sun.

Apollo Observations: 121
Orbital Period · P
1.47 yr
v(q)
34 km/s
v(Q)
20.2 km/s
Diameter · ≈
0.04 km
TJ
5
Eccentricity · e
0.2547

Orbit and dynamics

The path is an ellipse reaching 0.962 AU from the Sun at perihelion and 1.619 AU at aphelion, a radial span of 0.657 AU.

Applying Kepler's third law to a = 1.29 AU gives an orbital period of 1.47 yr, or about 535 days.

An eccentricity of 0.255 makes the orbit moderately elongated.

Its inclination of 1.93° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 34 km/s at perihelion and falls to 20.2 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 = 24.6 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.

Observation record and orbit quality

The current orbit solution is based on 121 observations and has a weighted RMS residual of 0.3847 arcseconds.

Condition code U = 5 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
1.29 AU
Eccentricity
0.2547
Perihelion
0.962 AU
Aphelion
1.618563 AU
Inclination
1.93°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
334.0°

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
2040-Nov-20 09:19 0.346007 AU
51761865 km
4.95 km/s
2041-Apr-26 22:34 0.210159 AU
31439353 km
11.22 km/s
2044-Jan-16 17:33 0.046526 AU
6960255 km
6.40 km/s
2047-Jul-08 16:30 0.477242 AU
71394453 km
7.20 km/s
2059-Nov-07 15:22 0.395505 AU
59166753 km
6.22 km/s
2060-May-04 08:54 0.307290 AU
45969947 km
14.82 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
24.6

Orbit Quality

RMS
0.38467
Condition
5
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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