SpaceAtlas Space Object Data
NASA JPL SBDB · 2018 CP14

2018 CP14

2018 CP14 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.093 AU it takes 1.14 yr to circle the Sun.

Apollo Observations: 189
Orbital Period · P
1.14 yr
v(q)
35.4 km/s
v(Q)
23 km/s
Diameter · ≈
0.1 km
TJ
5.61
Eccentricity · e
0.2127

Orbit and dynamics

Between its closest point (0.86 AU) and its farthest (1.325 AU), the heliocentric distance changes by 0.465 AU over every revolution.

One full revolution takes 1.14 yr (417 days), computed from the semi-major axis of 1.093 AU.

An eccentricity of 0.213 makes the orbit moderately elongated.

The orbital plane is tilted 19.58° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 35.4 km/s at perihelion and falls to 23 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 = 22.75 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.1 km.

Observation record and orbit quality

Astrometry from 189 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4671 arcseconds.

Condition code U = 0 means the orbit is very well determined, leaving only a small uncertainty in the future ephemeris.

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
1.093 AU
Eccentricity
0.2127
Perihelion
0.86 AU
Aphelion
1.325481 AU
Inclination
19.58°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
17.57°

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
2034-Feb-26 03:50 0.097940 AU
14651613 km
12.47 km/s
2042-Feb-25 22:46 0.122019 AU
18253823 km
13.31 km/s
2050-Feb-25 08:22 0.163105 AU
24400216 km
14.40 km/s
2051-Sep-01 20:07 0.171936 AU
25721204 km
15.37 km/s
2059-Aug-30 02:07 0.116407 AU
17414175 km
14.17 km/s
2067-Aug-27 19:50 0.072864 AU
10900312 km
13.30 km/s
2075-Aug-26 21:29 0.055830 AU
8352081 km
12.97 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
22.75

Orbit Quality

RMS
0.46714
Condition
0
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

Explore asteroids, comets and near-Earth objects with JPL orbital data.