SpaceAtlas Space Object Data
NASA JPL SBDB · 2015 FE120

2015 FE120

2015 FE120 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.255 AU it takes 3.39 yr to circle the Sun.

Apollo Observations: 39
Orbital Period · P
3.39 yr
v(q)
36.8 km/s
v(Q)
10.7 km/s
Diameter · ≈
0.22 km
TJ
3.32
Eccentricity · e
0.5491

Orbit and dynamics

Between its closest point (1.017 AU) and its farthest (3.493 AU), the heliocentric distance changes by 2.476 AU over every revolution.

One full revolution takes 3.39 yr (1,237 days), computed from the semi-major axis of 2.255 AU.

The high eccentricity (0.549) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 22.66° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 36.8 km/s at perihelion and falls to 10.7 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 21.01 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.22 km.

Observation record and orbit quality

Astrometry from 39 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5439 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
2.255 AU
Eccentricity
0.5491
Perihelion
1.017 AU
Aphelion
3.493221 AU
Inclination
22.66°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
100.15°

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
2032-Mar-27 06:49 0.169517 AU
25359327 km
17.13 km/s
2059-May-19 07:38 0.328110 AU
49084492 km
18.05 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
21.01

Orbit Quality

RMS
0.54389
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.

Keep exploring

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