SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 FO4

2020 FO4

2020 FO4 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.536 AU it takes 1.90 yr to circle the Sun.

Apollo Observations: 13
Orbital Period · P
1.90 yr
v(q)
34.5 km/s
v(Q)
16.7 km/s
Diameter · ≈
0.01 km
TJ
4.4
Eccentricity · e
0.3474

Orbit and dynamics

The path is an ellipse reaching 1.002 AU from the Sun at perihelion and 2.07 AU at aphelion, a radial span of 1.068 AU.

Applying Kepler's third law to a = 1.536 AU gives an orbital period of 1.90 yr, or about 695 days.

An eccentricity of 0.347 makes the orbit moderately elongated.

Its inclination of 4.07° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 34.5 km/s at perihelion and falls to 16.7 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 27 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 13 observations and has a weighted RMS residual of 0.4283 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
1.536 AU
Eccentricity
0.3474
Perihelion
1.002 AU
Aphelion
2.069606 AU
Inclination
4.07°
Orbital Period
— yr
Epoch
2458931.5
Mean Anomaly
12.23°

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

No close approaches to Earth are currently on record for this object.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
27.0

Orbit Quality

RMS
0.42827
Condition
8
Orbit ID
—
Data source: NASA JPL Small-Body Database . 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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