SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 HA7

2020 HA7

2020 HA7 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.615 AU it takes 2.05 yr to circle the Sun.

Apollo Observations: 51
Orbital Period · P
2.05 yr
v(q)
38.7 km/s
v(Q)
14.2 km/s
Diameter · ≈
0.1 km
TJ
4.19
Eccentricity · e
0.463

Orbit and dynamics

The path is an ellipse reaching 0.867 AU from the Sun at perihelion and 2.363 AU at aphelion, a radial span of 1.496 AU.

Applying Kepler's third law to a = 1.615 AU gives an orbital period of 2.05 yr, or about 750 days.

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

The orbital plane is tilted 11.66° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 38.7 km/s at perihelion and falls to 14.2 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 = 22.84 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.1 km.

Observation record and orbit quality

The current orbit solution is based on 51 observations and has a weighted RMS residual of 0.6681 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
1.615 AU
Eccentricity
0.463
Perihelion
0.867 AU
Aphelion
2.362745 AU
Inclination
11.66°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
24.63°

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
2054-Nov-30 10:53 0.303174 AU
45354235 km
17.70 km/s
2057-Jan-13 07:42 0.205759 AU
30781167 km
9.00 km/s
2058-Nov-20 06:34 0.494039 AU
73907241 km
6.86 km/s
2059-Mar-31 13:05 0.030689 AU
4591066 km
11.30 km/s
2061-Apr-22 21:32 0.264732 AU
39603283 km
19.02 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
22.84

Orbit Quality

RMS
0.66811
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.