SpaceAtlas Space Object Data
NASA JPL SBDB · 2022 DN3

2022 DN3

2022 DN3 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.343 AU once every 1.56 yr.

Amor Observations: 50
Orbital Period · P
1.56 yr
v(q)
30.1 km/s
v(Q)
21.9 km/s
Diameter · ≈
0.07 km
TJ
4.81
Eccentricity · e
0.1574

Orbit and dynamics

The path is an ellipse reaching 1.132 AU from the Sun at perihelion and 1.554 AU at aphelion, a radial span of 0.422 AU.

Applying Kepler's third law to a = 1.343 AU gives an orbital period of 1.56 yr, or about 568 days.

An eccentricity of 0.157 makes the orbit moderately elongated.

A steep inclination of 21.18° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 30.1 km/s at perihelion and falls to 21.9 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 = 23.39 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.07 km.

Observation record and orbit quality

The current orbit solution is based on 50 observations and has a weighted RMS residual of 0.4495 arcseconds.

Condition code U = 7 signals a poorly constrained orbit, so its future path should be treated as provisional.

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
1.343 AU
Eccentricity
0.1574
Perihelion
1.132 AU
Aphelion
1.554388 AU
Inclination
21.18°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
217.79°

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-Aug-19 19:29 0.359226 AU
53739506 km
10.93 km/s
2036-Mar-11 05:45 0.227786 AU
34076294 km
10.91 km/s
2047-Mar-26 19:49 0.347227 AU
51944460 km
16.59 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
23.39

Orbit Quality

RMS
0.44948
Condition
7
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.

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