SpaceAtlas Space Object Data
NASA JPL SBDB · 2018 AV18

2018 AV18

2018 AV18 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.385 AU it takes 1.63 yr to circle the Sun.

Apollo Observations: 11
Orbital Period · P
1.63 yr
v(q)
37.4 km/s
v(Q)
17.1 km/s
Diameter · ≈
0.04 km
TJ
4.58
Eccentricity · e
0.3728

Orbit and dynamics

Between its closest point (0.869 AU) and its farthest (1.901 AU), the heliocentric distance changes by 1.032 AU over every revolution.

One full revolution takes 1.63 yr (595 days), computed from the semi-major axis of 1.385 AU.

An eccentricity of 0.373 makes the orbit moderately elongated.

A steep inclination of 30.35° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 37.4 km/s at perihelion and falls to 17.1 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 = 24.52 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.

Observation record and orbit quality

Astrometry from 11 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4821 arcseconds.

Condition code U = 9 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
1.385 AU
Eccentricity
0.3728
Perihelion
0.869 AU
Aphelion
1.901328 AU
Inclination
30.35°
Orbital Period
— yr
Epoch
2458133.5
Mean Anomaly
322.71°

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
24.52

Orbit Quality

RMS
0.48212
Condition
9
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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