SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 KT31

2017 KT31

2017 KT31 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.947 AU and a period of 0.92 yr.

Aten Observations: 46
Orbital Period · P
0.92 yr
v(q)
34.3 km/s
v(Q)
27.3 km/s
Diameter · ≈
0.06 km
TJ
6.21
Eccentricity · e
0.1131

Orbit and dynamics

The path is an ellipse reaching 0.84 AU from the Sun at perihelion and 1.054 AU at aphelion, a radial span of 0.214 AU.

Applying Kepler's third law to a = 0.947 AU gives an orbital period of 0.92 yr, or about 336 days.

An eccentricity of 0.113 makes the orbit moderately elongated.

A steep inclination of 32.64° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 34.3 km/s at perihelion and falls to 27.3 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 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.06 km.

Observation record and orbit quality

The current orbit solution is based on 46 observations and has a weighted RMS residual of 0.5119 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
0.9466 AU
Eccentricity
0.1131
Perihelion
0.84 AU
Aphelion
1.05366 AU
Inclination
32.64°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
156.16°

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
2027-Dec-14 15:31 0.213884 AU
31996618 km
21.17 km/s
2028-May-24 03:42 0.165086 AU
24696454 km
17.46 km/s
2029-May-17 18:32 0.129380 AU
19354974 km
17.49 km/s
2040-May-22 10:32 0.044628 AU
6676282 km
16.27 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
24.0

Orbit Quality

RMS
0.51193
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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