SpaceAtlas Space Object Data
NASA JPL SBDB · 2013 JB36

2013 JB36

2013 JB36 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.611 AU once every 2.04 yr.

Amor Observations: 244
Orbital Period · P
2.04 yr
v(q)
33.4 km/s
v(Q)
16.5 km/s
Diameter · ≈
0.28 km
TJ
4.1
Eccentricity · e
0.3389

Orbit and dynamics

The path is an ellipse reaching 1.065 AU from the Sun at perihelion and 2.157 AU at aphelion, a radial span of 1.092 AU.

Applying Kepler's third law to a = 1.611 AU gives an orbital period of 2.04 yr, or about 747 days.

An eccentricity of 0.339 makes the orbit moderately elongated.

A steep inclination of 34.14° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 33.4 km/s at perihelion and falls to 16.5 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 = 20.5 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.28 km.

Observation record and orbit quality

The current orbit solution is based on 244 observations and has a weighted RMS residual of 0.4415 arcseconds.

Condition code U = 1 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
1.611 AU
Eccentricity
0.3389
Perihelion
1.065 AU
Aphelion
2.156968 AU
Inclination
34.14°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
136.71°

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
2056-May-18 20:46 0.367685 AU
55004932 km
20.37 km/s
2058-May-30 11:49 0.105969 AU
15852711 km
18.71 km/s
2060-Jun-10 08:39 0.194996 AU
29170914 km
19.93 km/s
2062-Jun-22 11:32 0.460945 AU
68956334 km
23.53 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
20.5

Orbit Quality

RMS
0.44145
Condition
1
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.