SpaceAtlas Space Object Data
NASA JPL SBDB · 2023 SW7

2023 SW7

2023 SW7 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.846 AU once every 2.51 yr.

Amor Observations: 42
Orbital Period · P
2.51 yr
v(q)
34.5 km/s
v(Q)
13.9 km/s
Diameter · ≈
0.16 km
TJ
3.78
Eccentricity · e
0.4243

Orbit and dynamics

The path is an ellipse reaching 1.062 AU from the Sun at perihelion and 2.629 AU at aphelion, a radial span of 1.567 AU.

Applying Kepler's third law to a = 1.846 AU gives an orbital period of 2.51 yr, or about 916 days.

The high eccentricity (0.424) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 26.73° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 34.5 km/s at perihelion and falls to 13.9 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 = 21.72 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.16 km.

Observation record and orbit quality

The current orbit solution is based on 42 observations and has a weighted RMS residual of 0.4555 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
1.846 AU
Eccentricity
0.4243
Perihelion
1.062 AU
Aphelion
2.629258 AU
Inclination
26.73°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
38.6°

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

No close approaches to Earth are currently on record for this object.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
21.72

Orbit Quality

RMS
0.45552
Condition
6
Orbit ID
—
Data source: NASA JPL Small-Body Database . 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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