SpaceAtlas Space Object Data
NASA JPL SBDB · 2016 AT131

2016 AT131

2016 AT131 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.225 AU it takes 1.36 yr to circle the Sun.

Apollo Observations: 33
Orbital Period · P
1.36 yr
v(q)
33.8 km/s
v(Q)
21.4 km/s
Diameter · ≈
0.01 km
TJ
5.19
Eccentricity · e
0.2237

Orbit and dynamics

Between its closest point (0.951 AU) and its farthest (1.499 AU), the heliocentric distance changes by 0.548 AU over every revolution.

One full revolution takes 1.36 yr (495 days), computed from the semi-major axis of 1.225 AU.

An eccentricity of 0.224 makes the orbit moderately elongated.

The orbital plane is tilted 7.74° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 33.8 km/s at perihelion and falls to 21.4 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 = 27.4 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 33 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5211 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
1.225 AU
Eccentricity
0.2237
Perihelion
0.951 AU
Aphelion
1.499033 AU
Inclination
7.74°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
271.38°

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
2030-Sep-14 15:07 0.227512 AU
34035376 km
15.00 km/s
2061-Jul-04 12:15 0.406611 AU
60828105 km
7.71 km/s
2065-Jun-02 16:50 0.496256 AU
74238861 km
8.32 km/s
2069-May-01 20:09 0.484109 AU
72421736 km
7.71 km/s
2072-Sep-18 21:38 0.242063 AU
36212134 km
12.59 km/s
2073-Mar-21 05:30 0.348603 AU
52150312 km
5.55 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
27.4

Orbit Quality

RMS
0.52108
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

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