SpaceAtlas Space Object Data
NASA JPL SBDB · 2014 US115

2014 US115

2014 US115 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.068 AU it takes 1.10 yr to circle the Sun.

Apollo Observations: 38
Orbital Period · P
1.10 yr
v(q)
36.6 km/s
v(Q)
22.7 km/s
Diameter · ≈
0.04 km
TJ
5.73
Eccentricity · e
0.2354

Orbit and dynamics

The path is an ellipse reaching 0.817 AU from the Sun at perihelion and 1.319 AU at aphelion, a radial span of 0.502 AU.

Applying Kepler's third law to a = 1.068 AU gives an orbital period of 1.10 yr, or about 403 days.

An eccentricity of 0.235 makes the orbit moderately elongated.

The orbital plane is tilted 12.3° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 36.6 km/s at perihelion and falls to 22.7 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 = 24.6 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.

Observation record and orbit quality

The current orbit solution is based on 38 observations and has a weighted RMS residual of 0.5118 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
1.068 AU
Eccentricity
0.2354
Perihelion
0.817 AU
Aphelion
1.319407 AU
Inclination
12.3°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
116.24°

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-May-14 16:00 0.226831 AU
33933497 km
15.88 km/s
2035-Oct-31 15:37 0.063871 AU
9555013 km
12.27 km/s
2037-Apr-20 19:24 0.081641 AU
12213380 km
7.03 km/s
2046-Nov-06 12:00 0.037035 AU
5540339 km
7.58 km/s
2047-Jul-25 04:59 0.386143 AU
57766114 km
6.61 km/s
2048-May-04 18:40 0.039292 AU
5877988 km
11.18 km/s
2056-Oct-25 00:04 0.275995 AU
41288301 km
16.18 km/s
2057-Sep-21 17:59 0.321764 AU
48135280 km
6.89 km/s
2058-Mar-02 21:54 0.231924 AU
34695403 km
6.72 km/s
2059-May-20 06:33 0.368138 AU
55072667 km
19.00 km/s
2067-Nov-05 11:00 0.024046 AU
3597213 km
9.04 km/s
2069-May-01 02:40 0.011733 AU
1755228 km
9.50 km/s
2077-Oct-28 13:27 0.140181 AU
20970794 km
14.38 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
24.6

Orbit Quality

RMS
0.51183
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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