SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 TR3

2020 TR3

2020 TR3 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.076 AU it takes 1.12 yr to circle the Sun.

Apollo Observations: 26
Orbital Period · P
1.12 yr
v(q)
31.1 km/s
v(Q)
26.5 km/s
Diameter · ≈
0.03 km
TJ
5.63
Eccentricity · e
0.08

Orbit and dynamics

Between its closest point (0.99 AU) and its farthest (1.162 AU), the heliocentric distance changes by 0.172 AU over every revolution.

One full revolution takes 1.12 yr (408 days), computed from the semi-major axis of 1.076 AU.

With e = 0.08, the orbit is close to circular.

A steep inclination of 28.4° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 31.1 km/s at perihelion and falls to 26.5 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 = 25.46 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

Astrometry from 26 individual observations underpins this orbit; the fit leaves an RMS residual of 0.6303 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
1.076 AU
Eccentricity
0.08
Perihelion
0.99 AU
Aphelion
1.16208 AU
Inclination
28.4°
Orbital Period
— yr
Epoch
2459135.5
Mean Anomaly
307.34°

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
2029-Sep-29 03:45 0.167726 AU
25091522 km
19.70 km/s
2030-Apr-09 03:36 0.189108 AU
28290117 km
15.08 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
25.46

Orbit Quality

RMS
0.6303
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.

Keep exploring

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