SpaceAtlas Space Object Data
NASA JPL SBDB · 2022 JA2

2022 JA2

2022 JA2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.934 AU it takes 2.69 yr to circle the Sun.

Apollo Observations: 86
Orbital Period · P
2.69 yr
v(q)
37.1 km/s
v(Q)
12.4 km/s
Diameter · ≈
0.47 km
TJ
3.64
Eccentricity · e
0.5005

Orbit and dynamics

Between its closest point (0.966 AU) and its farthest (2.902 AU), the heliocentric distance changes by 1.936 AU over every revolution.

One full revolution takes 2.69 yr (982 days), computed from the semi-major axis of 1.934 AU.

The high eccentricity (0.5) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 26.24° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 37.1 km/s at perihelion and falls to 12.4 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 = 19.37 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.47 km.

Observation record and orbit quality

Astrometry from 86 individual observations underpins this orbit; the fit leaves an RMS residual of 0.6736 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
1.934 AU
Eccentricity
0.5005
Perihelion
0.966 AU
Aphelion
2.901967 AU
Inclination
26.24°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
219.14°

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-Apr-01 19:23 0.043748 AU
6544640 km
17.26 km/s
2057-Mar-07 21:03 0.281440 AU
42102819 km
16.21 km/s
2065-Apr-14 13:02 0.257643 AU
38542832 km
20.77 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
19.37

Orbit Quality

RMS
0.67359
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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