SpaceAtlas Space Object Data
NASA JPL SBDB · 2023 UG

2023 UG

2023 UG is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.97 AU and a period of 0.96 yr.

Aten Observations: 17
Orbital Period · P
0.96 yr
v(q)
35.1 km/s
v(Q)
26 km/s
Diameter · ≈
0.02 km
TJ
6.22
Eccentricity · e
0.1485

Orbit and dynamics

Between its closest point (0.826 AU) and its farthest (1.114 AU), the heliocentric distance changes by 0.288 AU over every revolution.

One full revolution takes 0.96 yr (349 days), computed from the semi-major axis of 0.97 AU.

An eccentricity of 0.148 makes the orbit moderately elongated.

Its inclination of 2.83° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 35.1 km/s at perihelion and falls to 26 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 = 26.57 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

Astrometry from 17 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3836 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
0.97 AU
Eccentricity
0.1485
Perihelion
0.826 AU
Aphelion
1.114045 AU
Inclination
2.83°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
41.28°

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-Jan-28 00:41 0.364128 AU
54472705 km
15.98 km/s
2043-Oct-01 22:46 0.355210 AU
53138652 km
15.80 km/s
2044-Sep-20 22:34 0.081898 AU
12251771 km
7.61 km/s
2045-Jul-22 11:50 0.152052 AU
22746603 km
4.19 km/s
2045-Nov-08 19:42 0.125216 AU
18732097 km
4.02 km/s
2046-May-14 19:02 0.186687 AU
27927928 km
5.64 km/s
2047-Feb-12 06:39 0.046475 AU
6952521 km
3.71 km/s
2048-Feb-03 01:52 0.222045 AU
33217390 km
11.73 km/s
2049-Jan-22 05:09 0.487342 AU
72905337 km
19.89 km/s
2065-Oct-03 23:20 0.430051 AU
64334778 km
18.15 km/s
2066-Sep-23 23:21 0.168916 AU
25269457 km
10.28 km/s
2067-Oct-02 01:04 0.068588 AU
10260628 km
3.27 km/s
2068-Jun-06 03:41 0.191239 AU
28608873 km
5.68 km/s
2068-Dec-29 04:30 0.117575 AU
17588960 km
3.77 km/s
2069-Mar-28 13:56 0.128783 AU
19265618 km
3.95 km/s
2070-Feb-06 14:14 0.111240 AU
16641223 km
8.58 km/s
2071-Jan-26 17:32 0.380021 AU
56850281 km
16.83 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
26.57

Orbit Quality

RMS
0.38355
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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