SpaceAtlas Space Object Data
NASA JPL SBDB · 2015 CK13

2015 CK13

2015 CK13 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.193 AU it takes 1.30 yr to circle the Sun.

Apollo Observations: 35
Orbital Period · P
1.30 yr
v(q)
32.3 km/s
v(Q)
23 km/s
Diameter · ≈
0.01 km
TJ
5.27
Eccentricity · e
0.1673

Orbit and dynamics

Between its closest point (0.994 AU) and its farthest (1.393 AU), the heliocentric distance changes by 0.399 AU over every revolution.

One full revolution takes 1.30 yr (476 days), computed from the semi-major axis of 1.193 AU.

An eccentricity of 0.167 makes the orbit moderately elongated.

The orbital plane is tilted 16.7° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 32.3 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 = 27.2 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 35 individual observations underpins this orbit; the fit leaves an RMS residual of 0.6541 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
1.193 AU
Eccentricity
0.1673
Perihelion
0.994 AU
Aphelion
1.392589 AU
Inclination
16.7°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
227.09°

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
2028-Mar-01 18:58 0.153941 AU
23029214 km
10.61 km/s
2032-Jan-30 16:40 0.192334 AU
28772803 km
14.73 km/s
2032-Jul-24 16:13 0.320939 AU
48011856 km
9.10 km/s
2049-Aug-18 14:51 0.352728 AU
52767425 km
9.75 km/s
2053-Oct-02 14:28 0.441473 AU
66043390 km
8.56 km/s
2058-Feb-20 06:06 0.094921 AU
14200044 km
9.21 km/s
2062-Jan-22 15:47 0.422409 AU
63191545 km
18.76 km/s
2062-Aug-06 16:58 0.338533 AU
50643835 km
9.53 km/s
2066-Sep-16 13:04 0.421297 AU
63025193 km
9.41 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
27.2

Orbit Quality

RMS
0.65405
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.

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