SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 KJ5

2017 KJ5

2017 KJ5 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.328 AU once every 1.53 yr.

Amor Observations: 46
Orbital Period · P
1.53 yr
v(q)
32.4 km/s
v(Q)
20.6 km/s
Diameter · ≈
0.02 km
TJ
4.9
Eccentricity · e
0.223

Orbit and dynamics

The path is an ellipse reaching 1.032 AU from the Sun at perihelion and 1.624 AU at aphelion, a radial span of 0.592 AU.

Applying Kepler's third law to a = 1.328 AU gives an orbital period of 1.53 yr, or about 559 days.

An eccentricity of 0.223 makes the orbit moderately elongated.

Its inclination of 2.19° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 32.4 km/s at perihelion and falls to 20.6 km/s at aphelion.

Its perihelion lies just outside Earth's orbit, which is why it is classed as Earth-approaching rather than Earth-crossing.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 26.6 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

The current orbit solution is based on 46 observations and has a weighted RMS residual of 0.4079 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
1.328 AU
Eccentricity
0.223
Perihelion
1.032 AU
Aphelion
1.624144 AU
Inclination
2.19°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
312.53°

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
2037-Oct-19 16:21 0.445786 AU
66688606 km
7.03 km/s
2040-May-06 13:05 0.103092 AU
15422399 km
10.17 km/s
2046-Feb-26 14:58 0.398732 AU
59649505 km
6.24 km/s
2046-Aug-15 22:47 0.396816 AU
59362849 km
17.70 km/s
2063-May-02 15:33 0.174756 AU
26143186 km
12.65 km/s
2069-Feb-26 14:58 0.441878 AU
66104083 km
6.30 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
26.6

Orbit Quality

RMS
0.40786
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.

Keep exploring

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