SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 HS6

2020 HS6

2020 HS6 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.281 AU it takes 3.44 yr to circle the Sun.

Apollo Observations: 126
Orbital Period · P
3.44 yr
v(q)
55 km/s
v(Q)
7.1 km/s
Diameter · ≈
0.13 km
TJ
3.11
Eccentricity · e
0.7722

Orbit and dynamics

Between its closest point (0.52 AU) and its farthest (4.042 AU), the heliocentric distance changes by 3.522 AU over every revolution.

One full revolution takes 3.44 yr (1,258 days), computed from the semi-major axis of 2.281 AU.

The high eccentricity (0.772) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 9.69° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 55 km/s at perihelion and falls to 7.1 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 = 22.2 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.13 km.

Observation record and orbit quality

Astrometry from 126 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3583 arcseconds.

Condition code U = 4 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
2.281 AU
Eccentricity
0.7722
Perihelion
0.52 AU
Aphelion
4.042388 AU
Inclination
9.69°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
260.37°

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-Dec-12 09:42 0.347962 AU
52054377 km
35.14 km/s
2037-Nov-01 04:53 0.291301 AU
43578078 km
16.83 km/s
2044-Aug-31 15:20 0.492560 AU
73685940 km
24.87 km/s
2051-Jul-06 12:40 0.425855 AU
63707021 km
19.32 km/s
2058-May-07 17:32 0.102368 AU
15314010 km
27.78 km/s
2068-Dec-14 06:03 0.402850 AU
60265466 km
36.75 km/s
2075-Nov-20 00:32 0.101052 AU
15117224 km
21.99 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
22.2

Orbit Quality

RMS
0.35826
Condition
4
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

Explore asteroids, comets and near-Earth objects with JPL orbital data.