SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 UL3

2020 UL3

2020 UL3 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.207 AU it takes 1.33 yr to circle the Sun.

Apollo Observations: 244
Orbital Period · P
1.33 yr
v(q)
37.9 km/s
v(Q)
19.4 km/s
Diameter · ≈
0.08 km
TJ
5.21
Eccentricity · e
0.3226

Orbit and dynamics

Between its closest point (0.818 AU) and its farthest (1.596 AU), the heliocentric distance changes by 0.778 AU over every revolution.

One full revolution takes 1.33 yr (484 days), computed from the semi-major axis of 1.207 AU.

An eccentricity of 0.323 makes the orbit moderately elongated.

The orbital plane is tilted 10.39° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 37.9 km/s at perihelion and falls to 19.4 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 = 23.22 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.08 km.

Observation record and orbit quality

Astrometry from 244 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3703 arcseconds.

Condition code U = 0 means the orbit is very well determined, leaving only a small uncertainty in the future ephemeris.

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
1.207 AU
Eccentricity
0.3226
Perihelion
0.818 AU
Aphelion
1.596378 AU
Inclination
10.39°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
25.54°

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
23.22

Orbit Quality

RMS
0.37034
Condition
0
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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