SpaceAtlas Space Object Data
NASA JPL SBDB · 2018 KN2

2018 KN2

2018 KN2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.568 AU it takes 1.96 yr to circle the Sun.

Apollo Observations: 60
Orbital Period · P
1.96 yr
v(q)
34.5 km/s
v(Q)
16.4 km/s
Diameter · ≈
0.03 km
TJ
4.33
Eccentricity · e
0.3557

Orbit and dynamics

The path is an ellipse reaching 1.01 AU from the Sun at perihelion and 2.126 AU at aphelion, a radial span of 1.116 AU.

Applying Kepler's third law to a = 1.568 AU gives an orbital period of 1.96 yr, or about 717 days.

An eccentricity of 0.356 makes the orbit moderately elongated.

The orbital plane is tilted 10.03° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 34.5 km/s at perihelion and falls to 16.4 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 25.5 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 60 observations and has a weighted RMS residual of 0.2319 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
1.568 AU
Eccentricity
0.3557
Perihelion
1.01 AU
Aphelion
2.125738 AU
Inclination
10.03°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
22.25°

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
25.5

Orbit Quality

RMS
0.23187
Condition
7
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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