SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 SY6

2020 SY6

2020 SY6 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.435 AU it takes 1.72 yr to circle the Sun.

Apollo Observations: 33
Orbital Period · P
1.72 yr
v(q)
34.6 km/s
v(Q)
17.9 km/s
Diameter · ≈
0.05 km
TJ
4.56
Eccentricity · e
0.3176

Orbit and dynamics

The path is an ellipse reaching 0.979 AU from the Sun at perihelion and 1.891 AU at aphelion, a radial span of 0.912 AU.

Applying Kepler's third law to a = 1.435 AU gives an orbital period of 1.72 yr, or about 628 days.

An eccentricity of 0.318 makes the orbit moderately elongated.

A steep inclination of 20.67° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 34.6 km/s at perihelion and falls to 17.9 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 = 24.3 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.05 km.

Observation record and orbit quality

The current orbit solution is based on 33 observations and has a weighted RMS residual of 0.8425 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
1.435 AU
Eccentricity
0.3176
Perihelion
0.979 AU
Aphelion
1.890756 AU
Inclination
20.67°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
140.35°

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
2032-Apr-24 19:08 0.440922 AU
65961021 km
10.76 km/s
2032-Sep-28 14:53 0.060437 AU
9041249 km
16.03 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
24.3

Orbit Quality

RMS
0.8425
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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