SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 HA10

2020 HA10

2020 HA10 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 0.82 AU it takes 0.74 yr to circle the Sun.

Apollo Observations: 43
Orbital Period · P
0.74 yr
v(q)
38.5 km/s
v(Q)
28.1 km/s
Diameter · ≈
0.6 km
TJ
6.86
Eccentricity · e
0.1552

Orbit and dynamics

The path is an ellipse reaching 0.692 AU from the Sun at perihelion and 0.947 AU at aphelion, a radial span of 0.255 AU.

Applying Kepler's third law to a = 0.82 AU gives an orbital period of 0.74 yr, or about 271 days.

An eccentricity of 0.155 makes the orbit moderately elongated.

A steep inclination of 49.65° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 38.5 km/s at perihelion and falls to 28.1 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 18.86 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.6 km.

Observation record and orbit quality

The current orbit solution is based on 43 observations and has a weighted RMS residual of 0.6768 arcseconds.

Condition code U = 1 means the orbit is very well determined, leaving only a small uncertainty in the future ephemeris.

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
0.8197 AU
Eccentricity
0.1552
Perihelion
0.692 AU
Aphelion
0.946917 AU
Inclination
49.65°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
201.15°

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
2031-Jul-07 16:58 0.092332 AU
13812652 km
24.55 km/s
2034-Jun-30 14:42 0.167441 AU
25048830 km
24.42 km/s
2054-Jul-08 10:12 0.101369 AU
15164622 km
24.66 km/s
2057-Jul-01 06:00 0.151005 AU
22590073 km
24.38 km/s
2077-Jul-08 18:49 0.108050 AU
16164094 km
24.72 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
18.86

Orbit Quality

RMS
0.67679
Condition
1
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.