SpaceAtlas Space Object Data
NASA JPL SBDB · 2023 FE4

2023 FE4

2023 FE4 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.108 AU once every 1.17 yr.

Amor Observations: 89
Orbital Period · P
1.17 yr
v(q)
30.6 km/s
v(Q)
26.2 km/s
Diameter · ≈
0.03 km
TJ
5.61
Eccentricity · e
0.0782

Orbit and dynamics

The path is an ellipse reaching 1.021 AU from the Sun at perihelion and 1.195 AU at aphelion, a radial span of 0.174 AU.

Applying Kepler's third law to a = 1.108 AU gives an orbital period of 1.17 yr, or about 426 days.

With e = 0.078, the orbit is close to circular.

Its inclination of 4.59° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 30.6 km/s at perihelion and falls to 26.2 km/s at aphelion.

Its perihelion lies just outside Earth's orbit, which is why it is classed as Earth-approaching rather than Earth-crossing.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 25.28 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

The current orbit solution is based on 89 observations and has a weighted RMS residual of 0.3763 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
1.108 AU
Eccentricity
0.0782
Perihelion
1.021 AU
Aphelion
1.194646 AU
Inclination
4.59°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
265.38°

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
2030-Apr-05 00:59 0.020924 AU
3130133 km
2.60 km/s
2037-Mar-31 17:26 0.019782 AU
2959407 km
3.44 km/s
2044-Mar-25 08:20 0.240315 AU
35950570 km
8.11 km/s
2044-Aug-24 17:28 0.162706 AU
24340434 km
3.36 km/s
2051-Mar-21 08:15 0.328304 AU
49113636 km
13.73 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
25.28

Orbit Quality

RMS
0.37628
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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