SpaceAtlas Space Object Data
NASA JPL SBDB · 2018 KF1

2018 KF1

2018 KF1 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.287 AU it takes 3.46 yr to circle the Sun.

Apollo Observations: 116
Orbital Period · P
3.46 yr
v(q)
37.1 km/s
v(Q)
10.4 km/s
Diameter · ≈
0.02 km
TJ
3.37
Eccentricity · e
0.5607

Orbit and dynamics

The path is an ellipse reaching 1.005 AU from the Sun at perihelion and 3.569 AU at aphelion, a radial span of 2.564 AU.

Applying Kepler's third law to a = 2.287 AU gives an orbital period of 3.46 yr, or about 1,263 days.

The high eccentricity (0.561) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 6.14° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 37.1 km/s at perihelion and falls to 10.4 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 25.8 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

The current orbit solution is based on 116 observations and has a weighted RMS residual of 0.2504 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
2.287 AU
Eccentricity
0.5607
Perihelion
1.005 AU
Aphelion
3.569321 AU
Inclination
6.14°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
114.35°

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

No close approaches to Earth are currently on record for this object.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
25.8

Orbit Quality

RMS
0.25041
Condition
6
Orbit ID
—
Data source: NASA JPL Small-Body Database . 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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