SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 RX3

2019 RX3

2019 RX3 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.454 AU it takes 3.84 yr to circle the Sun.

Apollo Observations: 24
Orbital Period · P
3.84 yr
v(q)
39.1 km/s
v(Q)
9.3 km/s
Diameter · ≈
0.13 km
TJ
3.19
Eccentricity · e
0.6172

Orbit and dynamics

The path is an ellipse reaching 0.939 AU from the Sun at perihelion and 3.969 AU at aphelion, a radial span of 3.03 AU.

Applying Kepler's third law to a = 2.454 AU gives an orbital period of 3.84 yr, or about 1,404 days.

The high eccentricity (0.617) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 8.45° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 39.1 km/s at perihelion and falls to 9.3 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 = 22.13 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.13 km.

Observation record and orbit quality

The current orbit solution is based on 24 observations and has a weighted RMS residual of 0.4953 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
2.454 AU
Eccentricity
0.6172
Perihelion
0.939 AU
Aphelion
3.968609 AU
Inclination
8.45°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
282.75°

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
2042-Sep-14 16:32 0.206981 AU
30963920 km
20.66 km/s
2046-May-06 16:03 0.282158 AU
42210178 km
22.42 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
22.13

Orbit Quality

RMS
0.49529
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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