SpaceAtlas Space Object Data
NASA JPL SBDB · 2014 KG39

2014 KG39

2014 KG39 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.903 AU and a period of 0.86 yr.

Aten Observations: 45
Orbital Period · P
0.86 yr
v(q)
45.6 km/s
v(Q)
21.6 km/s
Diameter · ≈
0.04 km
TJ
6.54
Eccentricity · e
0.3577

Orbit and dynamics

Between its closest point (0.58 AU) and its farthest (1.226 AU), the heliocentric distance changes by 0.646 AU over every revolution.

One full revolution takes 0.86 yr (313 days), computed from the semi-major axis of 0.903 AU.

An eccentricity of 0.358 makes the orbit moderately elongated.

Its inclination of 3.46° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 45.6 km/s at perihelion and falls to 21.6 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 = 24.94 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.

Observation record and orbit quality

Astrometry from 45 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5487 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
0.9029 AU
Eccentricity
0.3577
Perihelion
0.58 AU
Aphelion
1.225867 AU
Inclination
3.46°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
261.47°

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
2031-Feb-24 22:35 0.165250 AU
24721118 km
14.88 km/s
2032-May-30 06:44 0.127056 AU
19007295 km
7.49 km/s
2038-May-20 16:21 0.166253 AU
24871027 km
7.53 km/s
2044-May-09 22:58 0.195053 AU
29179472 km
7.81 km/s
2074-Mar-13 15:35 0.172786 AU
25848344 km
7.48 km/s
2075-Jun-04 19:26 0.199011 AU
29771607 km
16.19 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
24.94

Orbit Quality

RMS
0.54874
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

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