SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 UG3

2019 UG3

2019 UG3 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.322 AU it takes 1.52 yr to circle the Sun.

Apollo Observations: 33
Orbital Period · P
1.52 yr
v(q)
34.2 km/s
v(Q)
19.6 km/s
Diameter · ≈
0.01 km
TJ
4.91
Eccentricity · e
0.2697

Orbit and dynamics

Between its closest point (0.965 AU) and its farthest (1.679 AU), the heliocentric distance changes by 0.714 AU over every revolution.

One full revolution takes 1.52 yr (555 days), computed from the semi-major axis of 1.322 AU.

An eccentricity of 0.27 makes the orbit moderately elongated.

Its inclination of 2.23° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 34.2 km/s at perihelion and falls to 19.6 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 = 29.2 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 33 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3512 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
1.322 AU
Eccentricity
0.2697
Perihelion
0.965 AU
Aphelion
1.678543 AU
Inclination
2.23°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
150.66°

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
2051-Jul-06 20:21 0.253941 AU
37989023 km
16.15 km/s
2052-Jan-07 14:27 0.417325 AU
62430913 km
7.02 km/s
2054-Jul-21 12:37 0.038476 AU
5755907 km
9.17 km/s
2060-Nov-04 09:35 0.051061 AU
7638547 km
9.13 km/s
2063-May-21 15:22 0.453242 AU
67804100 km
6.61 km/s
2063-Nov-19 00:32 0.343041 AU
51318225 km
16.21 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
29.2

Orbit Quality

RMS
0.35122
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

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