SpaceAtlas Space Object Data
NASA JPL SBDB · 496013

496013

496013 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.728 AU it takes 2.27 yr to circle the Sun.

Apollo Observations: 82
Orbital Period · P
2.27 yr
v(q)
38.2 km/s
v(Q)
13.4 km/s
Diameter · ≈
0.22 km
TJ
4
Eccentricity · e
0.4806

Orbit and dynamics

The path is an ellipse reaching 0.898 AU from the Sun at perihelion and 2.558 AU at aphelion, a radial span of 1.66 AU.

Applying Kepler's third law to a = 1.728 AU gives an orbital period of 2.27 yr, or about 830 days.

The high eccentricity (0.481) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 13.14° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 38.2 km/s at perihelion and falls to 13.4 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 = 21 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.22 km.

Observation record and orbit quality

The current orbit solution is based on 82 observations and has a weighted RMS residual of 0.4014 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
1.728 AU
Eccentricity
0.4806
Perihelion
0.898 AU
Aphelion
2.558477 AU
Inclination
13.14°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
354.1°

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
2033-Mar-16 07:03 0.024576 AU
3676531 km
12.29 km/s
2042-Jul-06 20:49 0.317714 AU
47529281 km
16.84 km/s
2049-Feb-13 04:54 0.432326 AU
64674982 km
24.10 km/s
2058-Apr-17 12:57 0.163348 AU
24436493 km
10.69 km/s
2074-Feb-28 07:38 0.177002 AU
26479081 km
16.98 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
21.0

Orbit Quality

RMS
0.40144
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

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