SpaceAtlas Space Object Data
NASA JPL SBDB · 2023 JM5

2023 JM5

2023 JM5 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.476 AU once every 1.79 yr.

Amor Observations: 29
Orbital Period · P
1.79 yr
v(q)
31.7 km/s
v(Q)
18.9 km/s
Diameter · ≈
0.03 km
TJ
4.56
Eccentricity · e
0.2522

Orbit and dynamics

The path is an ellipse reaching 1.104 AU from the Sun at perihelion and 1.848 AU at aphelion, a radial span of 0.744 AU.

Applying Kepler's third law to a = 1.476 AU gives an orbital period of 1.79 yr, or about 655 days.

An eccentricity of 0.252 makes the orbit moderately elongated.

Its inclination of 2.07° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 31.7 km/s at perihelion and falls to 18.9 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 = 25.75 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

The current orbit solution is based on 29 observations and has a weighted RMS residual of 0.2924 arcseconds.

Condition code U = 6 indicates a moderately constrained orbit; predictions decades ahead still carry noticeable uncertainty.

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
1.476 AU
Eccentricity
0.2522
Perihelion
1.104 AU
Aphelion
1.848247 AU
Inclination
2.07°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
249.82°

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
2032-May-26 13:38 0.171929 AU
25720151 km
5.19 km/s
2057-Jun-17 23:32 0.306703 AU
45882158 km
12.66 km/s
2066-Jun-07 09:31 0.090010 AU
13465347 km
6.70 km/s
2075-May-31 21:59 0.062433 AU
9339819 km
2.61 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
25.75

Orbit Quality

RMS
0.29241
Condition
6
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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