SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 CH2

2020 CH2

2020 CH2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.115 AU it takes 1.18 yr to circle the Sun.

Apollo Observations: 97
Orbital Period · P
1.18 yr
v(q)
31.6 km/s
v(Q)
25.2 km/s
Diameter · ≈
0.04 km
TJ
5.52
Eccentricity · e
0.1123

Orbit and dynamics

Between its closest point (0.99 AU) and its farthest (1.24 AU), the heliocentric distance changes by 0.25 AU over every revolution.

One full revolution takes 1.18 yr (430 days), computed from the semi-major axis of 1.115 AU.

An eccentricity of 0.112 makes the orbit moderately elongated.

A steep inclination of 21.27° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 31.6 km/s at perihelion and falls to 25.2 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 = 24.6 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.

Observation record and orbit quality

Astrometry from 97 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4162 arcseconds.

Condition code U = 7 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
1.115 AU
Eccentricity
0.1123
Perihelion
0.99 AU
Aphelion
1.240214 AU
Inclination
21.27°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
180.53°

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-19 19:34 0.309737 AU
46335986 km
17.96 km/s
2032-Aug-31 10:05 0.236369 AU
35360304 km
15.18 km/s
2033-Feb-12 09:55 0.121528 AU
18180332 km
12.18 km/s
2040-Feb-12 21:55 0.009853 AU
1474037 km
12.28 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
24.6

Orbit Quality

RMS
0.41619
Condition
7
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

Explore asteroids, comets and near-Earth objects with JPL orbital data.