SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 CM4

2019 CM4

2019 CM4 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.723 AU it takes 2.26 yr to circle the Sun.

Apollo Observations: 162
Orbital Period · P
2.26 yr
v(q)
38.4 km/s
v(Q)
13.4 km/s
Diameter · ≈
0.09 km
TJ
4.02
Eccentricity · e
0.483

Orbit and dynamics

The path is an ellipse reaching 0.891 AU from the Sun at perihelion and 2.555 AU at aphelion, a radial span of 1.664 AU.

Applying Kepler's third law to a = 1.723 AU gives an orbital period of 2.26 yr, or about 826 days.

The high eccentricity (0.483) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 5.37° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 38.4 km/s at perihelion and falls to 13.4 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 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.09 km.

Observation record and orbit quality

The current orbit solution is based on 162 observations and has a weighted RMS residual of 0.3237 arcseconds.

Condition code U = 6 indicates a moderately constrained orbit; predictions decades ahead still carry noticeable uncertainty.

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
1.723 AU
Eccentricity
0.483
Perihelion
0.891 AU
Aphelion
2.555209 AU
Inclination
5.37°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
57.33°

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
2028-May-04 09:13 0.133381 AU
19953538 km
9.18 km/s
2037-Jun-30 16:24 0.095392 AU
14270444 km
12.07 km/s
2046-Jul-20 17:20 0.286656 AU
42883163 km
20.64 km/s
2062-Feb-27 22:28 0.085466 AU
12785496 km
16.87 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
23.0

Orbit Quality

RMS
0.32368
Condition
6
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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