SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 UG2

2019 UG2

2019 UG2 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.911 AU and a period of 0.87 yr.

Aten Observations: 32
Orbital Period · P
0.87 yr
v(q)
38.3 km/s
v(Q)
25.4 km/s
Diameter · ≈
0.05 km
TJ
6.47
Eccentricity · e
0.2031

Orbit and dynamics

Between its closest point (0.726 AU) and its farthest (1.096 AU), the heliocentric distance changes by 0.37 AU over every revolution.

One full revolution takes 0.87 yr (317 days), computed from the semi-major axis of 0.911 AU.

An eccentricity of 0.203 makes the orbit moderately elongated.

A steep inclination of 23.72° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 38.3 km/s at perihelion and falls to 25.4 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 = 24.3 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.05 km.

Observation record and orbit quality

Astrometry from 32 individual observations underpins this orbit; the fit leaves an RMS residual of 0.463 arcseconds.

Condition code U = 7 signals a poorly constrained orbit, so its future path should be treated as provisional.

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
0.9106 AU
Eccentricity
0.2031
Perihelion
0.726 AU
Aphelion
1.095543 AU
Inclination
23.72°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
9.81°

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
2027-Mar-12 05:10 0.270161 AU
40415559 km
15.81 km/s
2032-Oct-10 13:58 0.179336 AU
26828322 km
16.26 km/s
2033-May-07 05:56 0.322993 AU
48319050 km
15.78 km/s
2033-Nov-15 22:55 0.387997 AU
58043597 km
14.14 km/s
2039-Oct-13 18:29 0.064415 AU
9636317 km
12.36 km/s
2045-Oct-13 20:03 0.296367 AU
44335844 km
20.49 km/s
2046-Oct-29 22:29 0.226026 AU
33813001 km
12.92 km/s
2052-Oct-10 12:06 0.077293 AU
11562934 km
13.86 km/s
2059-Oct-21 00:04 0.128132 AU
19168347 km
12.21 km/s
2065-Oct-11 01:18 0.158899 AU
23771008 km
16.16 km/s
2072-Oct-14 21:31 0.085433 AU
12780627 km
12.15 km/s
2073-Mar-28 12:13 0.253462 AU
37917343 km
15.80 km/s
2078-Oct-12 18:58 0.308859 AU
46204635 km
18.60 km/s
2079-May-20 17:02 0.362934 AU
54294135 km
15.30 km/s
2079-Nov-05 20:38 0.339253 AU
50751532 km
13.46 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
24.3

Orbit Quality

RMS
0.46298
Condition
7
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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