SpaceAtlas Space Object Data
NASA JPL SBDB · 2018 FP5

2018 FP5

2018 FP5 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.069 AU it takes 1.11 yr to circle the Sun.

Apollo Observations: 29
Orbital Period · P
1.11 yr
v(q)
50 km/s
v(Q)
16.6 km/s
Diameter · ≈
0.03 km
TJ
5.64
Eccentricity · e
0.501

Orbit and dynamics

Between its closest point (0.533 AU) and its farthest (1.605 AU), the heliocentric distance changes by 1.072 AU over every revolution.

One full revolution takes 1.11 yr (404 days), computed from the semi-major axis of 1.069 AU.

The high eccentricity (0.501) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 12.27° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 50 km/s at perihelion and falls to 16.6 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 = 25.7 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

Astrometry from 29 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5324 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
1.069 AU
Eccentricity
0.501
Perihelion
0.533 AU
Aphelion
1.604569 AU
Inclination
12.27°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
207.26°

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
2029-Apr-07 04:02 0.188165 AU
28149039 km
25.75 km/s
2039-Mar-25 07:35 0.006627 AU
991401 km
16.28 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
25.7

Orbit Quality

RMS
0.53236
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.

Keep exploring

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