SpaceAtlas Space Object Data
NASA JPL SBDB · 2026 SC3

2026 SC3

2026 SC3 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.011 AU it takes 1.02 yr to circle the Sun.

Apollo Observations: 35
Orbital Period · P
1.02 yr
v(q)
37.1 km/s
v(Q)
23.6 km/s
Diameter · ≈
0.01 km
TJ
6.01
Eccentricity · e
0.2226

Orbit and dynamics

The path is an ellipse reaching 0.786 AU from the Sun at perihelion and 1.236 AU at aphelion, a radial span of 0.45 AU.

Applying Kepler's third law to a = 1.011 AU gives an orbital period of 1.02 yr, or about 371 days.

An eccentricity of 0.223 makes the orbit moderately elongated.

Its inclination of 0.63° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 37.1 km/s at perihelion and falls to 23.6 km/s at aphelion.

Because q < 1 AU and Q > 1 AU, this orbit geometrically intersects the region of Earth's orbit.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 27.02 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 35 observations and has a weighted RMS residual of 0.5568 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
1.011 AU
Eccentricity
0.2226
Perihelion
0.786 AU
Aphelion
1.236049 AU
Inclination
0.63°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
345.73°

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
2027-Sep-13 23:57 0.057615 AU
8619106 km
8.90 km/s
2028-Sep-16 19:49 0.145696 AU
21795836 km
11.60 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
27.02

Orbit Quality

RMS
0.5568
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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