SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 CD1

2020 CD1

2020 CD1 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.932 AU and a period of 0.90 yr.

Aten Observations: 16
Orbital Period · P
0.90 yr
v(q)
39.9 km/s
v(Q)
23.9 km/s
Diameter · ≈
0.02 km
TJ
6.3
Eccentricity · e
0.2511

Orbit and dynamics

Between its closest point (0.698 AU) and its farthest (1.166 AU), the heliocentric distance changes by 0.468 AU over every revolution.

One full revolution takes 0.90 yr (329 days), computed from the semi-major axis of 0.932 AU.

An eccentricity of 0.251 makes the orbit moderately elongated.

A steep inclination of 29.04° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 39.9 km/s at perihelion and falls to 23.9 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 = 26.1 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

Astrometry from 16 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5312 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
0.9322 AU
Eccentricity
0.2511
Perihelion
0.698 AU
Aphelion
1.166275 AU
Inclination
29.04°
Orbital Period
— yr
Epoch
2458883.5
Mean Anomaly
96.33°

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-Jan-31 14:44 0.019755 AU
2955232 km
16.42 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
26.1

Orbit Quality

RMS
0.53117
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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