SpaceAtlas Space Object Data
NASA JPL SBDB · 2023 FF4

2023 FF4

2023 FF4 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.602 AU it takes 2.03 yr to circle the Sun.

Apollo Observations: 39
Orbital Period · P
2.03 yr
v(q)
35 km/s
v(Q)
15.8 km/s
Diameter · ≈
0.01 km
TJ
4.27
Eccentricity · e
0.3767

Orbit and dynamics

Between its closest point (0.998 AU) and its farthest (2.205 AU), the heliocentric distance changes by 1.207 AU over every revolution.

One full revolution takes 2.03 yr (741 days), computed from the semi-major axis of 1.602 AU.

An eccentricity of 0.377 makes the orbit moderately elongated.

Its inclination of 3.36° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 35 km/s at perihelion and falls to 15.8 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 = 28.26 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 39 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4353 arcseconds.

Condition code U = 6 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
1.602 AU
Eccentricity
0.3767
Perihelion
0.998 AU
Aphelion
2.205473 AU
Inclination
3.36°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
213.26°

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-10 04:26 0.429761 AU
64291400 km
3.18 km/s
2027-May-10 11:10 0.256961 AU
38440805 km
13.82 km/s
2029-May-20 12:38 0.421113 AU
62997587 km
18.89 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
28.26

Orbit Quality

RMS
0.43526
Condition
6
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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