SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 DR

2020 DR

2020 DR belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.104 AU it takes 1.16 yr to circle the Sun.

Apollo Observations: 25
Orbital Period · P
1.16 yr
v(q)
40.6 km/s
v(Q)
19.8 km/s
Diameter · ≈
0.02 km
TJ
5.58
Eccentricity · e
0.3451

Orbit and dynamics

The path is an ellipse reaching 0.723 AU from the Sun at perihelion and 1.485 AU at aphelion, a radial span of 0.762 AU.

Applying Kepler's third law to a = 1.104 AU gives an orbital period of 1.16 yr, or about 424 days.

An eccentricity of 0.345 makes the orbit moderately elongated.

Its inclination of 4.64° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 40.6 km/s at perihelion and falls to 19.8 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 = 26.5 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

The current orbit solution is based on 25 observations and has a weighted RMS residual of 0.2941 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
1.104 AU
Eccentricity
0.3451
Perihelion
0.723 AU
Aphelion
1.48499 AU
Inclination
4.64°
Orbital Period
— yr
Epoch
2458897.5
Mean Anomaly
302.15°

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
2027-Feb-04 09:32 0.281404 AU
42097432 km
23.81 km/s
2029-Sep-23 19:50 0.187383 AU
28032163 km
22.75 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
26.5

Orbit Quality

RMS
0.29406
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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