SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 GA3

2020 GA3

2020 GA3 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.335 AU it takes 1.54 yr to circle the Sun.

Apollo Observations: 38
Orbital Period · P
1.54 yr
v(q)
46.5 km/s
v(Q)
14.3 km/s
Diameter · ≈
0.03 km
TJ
4.75
Eccentricity · e
0.5298

Orbit and dynamics

The path is an ellipse reaching 0.628 AU from the Sun at perihelion and 2.042 AU at aphelion, a radial span of 1.414 AU.

Applying Kepler's third law to a = 1.335 AU gives an orbital period of 1.54 yr, or about 563 days.

The high eccentricity (0.53) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 6.49° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 46.5 km/s at perihelion and falls to 14.3 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 = 25.04 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

The current orbit solution is based on 38 observations and has a weighted RMS residual of 0.4382 arcseconds.

Condition code U = 8 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
1.335 AU
Eccentricity
0.5298
Perihelion
0.628 AU
Aphelion
2.042283 AU
Inclination
6.49°
Orbital Period
— yr
Epoch
2458956.5
Mean Anomaly
322.23°

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
2052-Nov-12 11:39 0.048526 AU
7259438 km
22.77 km/s
2060-Apr-05 02:24 0.309782 AU
46342774 km
27.49 km/s
2063-Apr-27 02:19 0.003383 AU
506017 km
14.70 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
25.04

Orbit Quality

RMS
0.43816
Condition
8
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.

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