SpaceAtlas Space Object Data
NASA JPL SBDB · 2013 JL22

2013 JL22

2013 JL22 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.187 AU it takes 1.29 yr to circle the Sun.

Apollo Observations: 111
Orbital Period · P
1.29 yr
v(q)
54.2 km/s
v(Q)
13.8 km/s
Diameter · ≈
0.21 km
TJ
5.15
Eccentricity · e
0.5944

Orbit and dynamics

The path is an ellipse reaching 0.481 AU from the Sun at perihelion and 1.893 AU at aphelion, a radial span of 1.412 AU.

Applying Kepler's third law to a = 1.187 AU gives an orbital period of 1.29 yr, or about 472 days.

The high eccentricity (0.594) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

Its inclination of 3.06° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 54.2 km/s at perihelion and falls to 13.8 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 = 21.16 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.21 km.

Observation record and orbit quality

The current orbit solution is based on 111 observations and has a weighted RMS residual of 0.4024 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
1.187 AU
Eccentricity
0.5944
Perihelion
0.481 AU
Aphelion
1.892553 AU
Inclination
3.06°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
86.81°

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-Sep-22 02:36 0.132825 AU
19870391 km
14.77 km/s
2035-Apr-30 15:42 0.023721 AU
3548673 km
17.80 km/s
2055-Sep-09 01:41 0.191411 AU
28634683 km
24.10 km/s
2064-Sep-17 09:34 0.040523 AU
6062148 km
17.99 km/s
2066-Apr-25 19:35 0.148940 AU
22281137 km
14.19 km/s
2075-May-04 18:22 0.067083 AU
10035428 km
20.46 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
21.16

Orbit Quality

RMS
0.40238
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

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