SpaceAtlas Space Object Data
NASA JPL SBDB · 2023 SA

2023 SA

2023 SA is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.257 AU once every 1.41 yr.

Amor Observations: 41
Orbital Period · P
1.41 yr
v(q)
32 km/s
v(Q)
22.1 km/s
Diameter · ≈
0.01 km
TJ
5
Eccentricity · e
0.184

Orbit and dynamics

The path is an ellipse reaching 1.026 AU from the Sun at perihelion and 1.488 AU at aphelion, a radial span of 0.462 AU.

Applying Kepler's third law to a = 1.257 AU gives an orbital period of 1.41 yr, or about 515 days.

An eccentricity of 0.184 makes the orbit moderately elongated.

A steep inclination of 27.22° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 32 km/s at perihelion and falls to 22.1 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 = 26.89 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

The current orbit solution is based on 41 observations and has a weighted RMS residual of 0.6284 arcseconds.

Condition code U = 8 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
1.257 AU
Eccentricity
0.184
Perihelion
1.026 AU
Aphelion
1.488288 AU
Inclination
27.22°
Orbital Period
— yr
Epoch
2460203.5
Mean Anomaly
2.25°

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-Sep-28 23:00 0.109267 AU
16346166 km
17.22 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
26.89

Orbit Quality

RMS
0.62844
Condition
8
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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