SpaceAtlas Space Object Data
NASA JPL SBDB · 2022 RG4

2022 RG4

2022 RG4 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: 50
Orbital Period · P
2.26 yr
v(q)
44.5 km/s
v(Q)
11.6 km/s
Diameter · ≈
0.58 km
TJ
3.4
Eccentricity · e
0.5875

Orbit and dynamics

The path is an ellipse reaching 0.711 AU from the Sun at perihelion and 2.735 AU at aphelion, a radial span of 2.024 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 (0.588) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 66.21° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 44.5 km/s at perihelion and falls to 11.6 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 = 18.93 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.58 km.

Observation record and orbit quality

The current orbit solution is based on 50 observations and has a weighted RMS residual of 0.7197 arcseconds.

Condition code U = 0 means the orbit is very well determined, leaving only a small uncertainty in the future ephemeris.

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
0.5875
Perihelion
0.711 AU
Aphelion
2.735263 AU
Inclination
66.21°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
131.33°

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
2030-Feb-25 22:40 0.272890 AU
40823747 km
42.34 km/s
2039-Mar-14 19:02 0.398540 AU
59620748 km
43.85 km/s
2064-Feb-01 01:56 0.454886 AU
68049941 km
42.83 km/s
2073-Feb-16 04:21 0.293647 AU
43928956 km
42.06 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
18.93

Orbit Quality

RMS
0.71965
Condition
0
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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