SpaceAtlas Space Object Data
NASA JPL SBDB · 2023 SF3

2023 SF3

2023 SF3 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.398 AU once every 1.65 yr.

Amor Observations: 88
Orbital Period · P
1.65 yr
v(q)
33.2 km/s
v(Q)
19.1 km/s
Diameter · ≈
0.04 km
TJ
4.58
Eccentricity · e
0.2688

Orbit and dynamics

Between its closest point (1.022 AU) and its farthest (1.774 AU), the heliocentric distance changes by 0.752 AU over every revolution.

One full revolution takes 1.65 yr (604 days), computed from the semi-major axis of 1.398 AU.

An eccentricity of 0.269 makes the orbit moderately elongated.

A steep inclination of 30.53° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 33.2 km/s at perihelion and falls to 19.1 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 = 24.54 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.

Observation record and orbit quality

Astrometry from 88 individual observations underpins this orbit; the fit leaves an RMS residual of 0.347 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
1.398 AU
Eccentricity
0.2688
Perihelion
1.022 AU
Aphelion
1.773782 AU
Inclination
30.53°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
229.55°

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
2028-Sep-06 08:25 0.170653 AU
25529285 km
18.69 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
24.54

Orbit Quality

RMS
0.34699
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.

Keep exploring

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