SpaceAtlas Space Object Data
NASA JPL SBDB · 2023 MN5

2023 MN5

2023 MN5 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 2.241 AU once every 3.35 yr.

Amor Observations: 64
Orbital Period · P
3.35 yr
v(q)
36.5 km/s
v(Q)
10.9 km/s
Diameter · ≈
0.46 km
TJ
3.19
Eccentricity · e
0.5413

Orbit and dynamics

The path is an ellipse reaching 1.028 AU from the Sun at perihelion and 3.454 AU at aphelion, a radial span of 2.426 AU.

Applying Kepler's third law to a = 2.241 AU gives an orbital period of 3.35 yr, or about 1,225 days.

The high eccentricity (0.541) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 38.47° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 36.5 km/s at perihelion and falls to 10.9 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 = 19.44 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.46 km.

Observation record and orbit quality

The current orbit solution is based on 64 observations and has a weighted RMS residual of 0.6021 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
2.241 AU
Eccentricity
0.5413
Perihelion
1.028 AU
Aphelion
3.454053 AU
Inclination
38.47°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
289.89°

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
2060-Aug-14 11:50 0.087387 AU
13072891 km
22.45 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
19.44

Orbit Quality

RMS
0.60215
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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