SpaceAtlas Space Object Data
NASA JPL SBDB · 529366

529366

529366 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.18 AU it takes 1.28 yr to circle the Sun.

Apollo Observations: 162
Orbital Period · P
1.28 yr
v(q)
32.5 km/s
v(Q)
23.1 km/s
Diameter · ≈
0.29 km
TJ
5.26
Eccentricity · e
0.1689

Orbit and dynamics

Between its closest point (0.981 AU) and its farthest (1.379 AU), the heliocentric distance changes by 0.398 AU over every revolution.

One full revolution takes 1.28 yr (468 days), computed from the semi-major axis of 1.18 AU.

An eccentricity of 0.169 makes the orbit moderately elongated.

A steep inclination of 25.77° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 32.5 km/s at perihelion and falls to 23.1 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 = 20.42 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.29 km.

Observation record and orbit quality

Astrometry from 162 individual observations underpins this orbit; the fit leaves an RMS residual of 0.6593 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
1.18 AU
Eccentricity
0.1689
Perihelion
0.981 AU
Aphelion
1.379302 AU
Inclination
25.77°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
342.74°

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
2050-Nov-28 10:10 0.113320 AU
16952478 km
14.99 km/s
2059-Nov-23 12:11 0.004668 AU
698340 km
14.24 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
20.42

Orbit Quality

RMS
0.65935
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.