SpaceAtlas Space Object Data
NASA JPL SBDB · 2022 SA29

2022 SA29

2022 SA29 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.432 AU it takes 1.71 yr to circle the Sun.

Apollo Observations: 45
Orbital Period · P
1.71 yr
v(q)
37.7 km/s
v(Q)
16.4 km/s
Diameter · ≈
0.1 km
TJ
4.6
Eccentricity · e
0.3926

Orbit and dynamics

The path is an ellipse reaching 0.87 AU from the Sun at perihelion and 1.994 AU at aphelion, a radial span of 1.124 AU.

Applying Kepler's third law to a = 1.432 AU gives an orbital period of 1.71 yr, or about 626 days.

An eccentricity of 0.393 makes the orbit moderately elongated.

Its inclination of 1.82° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 37.7 km/s at perihelion and falls to 16.4 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 = 22.83 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.1 km.

Observation record and orbit quality

The current orbit solution is based on 45 observations and has a weighted RMS residual of 0.5139 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
1.432 AU
Eccentricity
0.3926
Perihelion
0.87 AU
Aphelion
1.994203 AU
Inclination
1.82°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
353.41°

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
2035-Jan-15 04:41 0.114043 AU
17060655 km
7.46 km/s
2046-Dec-31 11:27 0.106839 AU
15982947 km
7.37 km/s
2058-Dec-20 01:05 0.091494 AU
13687294 km
7.19 km/s
2070-Dec-14 10:20 0.082656 AU
12365221 km
7.15 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
22.83

Orbit Quality

RMS
0.51389
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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