SpaceAtlas Space Object Data
NASA JPL SBDB · 2022 UG4

2022 UG4

2022 UG4 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.427 AU it takes 1.70 yr to circle the Sun.

Apollo Observations: 33
Orbital Period · P
1.70 yr
v(q)
42.2 km/s
v(Q)
14.7 km/s
Diameter · ≈
0.16 km
TJ
4.55
Eccentricity · e
0.4829

Orbit and dynamics

Between its closest point (0.738 AU) and its farthest (2.116 AU), the heliocentric distance changes by 1.378 AU over every revolution.

One full revolution takes 1.70 yr (623 days), computed from the semi-major axis of 1.427 AU.

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 10.96° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 42.2 km/s at perihelion and falls to 14.7 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 = 21.78 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.16 km.

Observation record and orbit quality

Astrometry from 33 individual observations underpins this orbit; the fit leaves an RMS residual of 0.6703 arcseconds.

Condition code U = 5 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
1.427 AU
Eccentricity
0.4829
Perihelion
0.738 AU
Aphelion
2.116098 AU
Inclination
10.96°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
345.43°

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 08:30 0.130379 AU
19504485 km
15.00 km/s
2034-Nov-20 00:29 0.260207 AU
38926339 km
19.49 km/s
2040-Mar-02 21:51 0.252262 AU
37737876 km
13.30 km/s
2045-May-24 00:00 0.340579 AU
50949821 km
22.99 km/s
2051-Dec-13 21:21 0.203626 AU
30462091 km
10.01 km/s
2057-Apr-21 03:36 0.138334 AU
20694543 km
12.47 km/s
2063-Nov-14 21:10 0.354027 AU
52961654 km
22.99 km/s
2068-Nov-16 14:44 0.441801 AU
66092430 km
7.56 km/s
2069-Feb-11 13:45 0.269873 AU
40372391 km
13.24 km/s
2074-May-15 20:22 0.217647 AU
32559511 km
18.85 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
21.78

Orbit Quality

RMS
0.67031
Condition
5
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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