SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 HA8

2020 HA8

2020 HA8 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.688 AU it takes 2.19 yr to circle the Sun.

Apollo Observations: 48
Orbital Period · P
2.19 yr
v(q)
37.8 km/s
v(Q)
13.9 km/s
Diameter · ≈
0.12 km
TJ
4.01
Eccentricity · e
0.4629

Orbit and dynamics

Between its closest point (0.907 AU) and its farthest (2.469 AU), the heliocentric distance changes by 1.562 AU over every revolution.

One full revolution takes 2.19 yr (801 days), computed from the semi-major axis of 1.688 AU.

The high eccentricity (0.463) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 23.27° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 37.8 km/s at perihelion and falls to 13.9 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 = 22.3 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.12 km.

Observation record and orbit quality

Astrometry from 48 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5451 arcseconds.

Condition code U = 3 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
1.688 AU
Eccentricity
0.4629
Perihelion
0.907 AU
Aphelion
2.469375 AU
Inclination
23.27°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
250.74°

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
22.3

Orbit Quality

RMS
0.54509
Condition
3
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.

Keep exploring

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