SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 DH2

2020 DH2

2020 DH2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.4 AU it takes 1.66 yr to circle the Sun.

Apollo Observations: 96
Orbital Period · P
1.66 yr
v(q)
33.7 km/s
v(Q)
18.8 km/s
Diameter · ≈
0.03 km
TJ
4.67
Eccentricity · e
0.2836

Orbit and dynamics

The path is an ellipse reaching 1.003 AU from the Sun at perihelion and 1.797 AU at aphelion, a radial span of 0.794 AU.

Applying Kepler's third law to a = 1.4 AU gives an orbital period of 1.66 yr, or about 605 days.

An eccentricity of 0.284 makes the orbit moderately elongated.

The orbital plane is tilted 16.49° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 33.7 km/s at perihelion and falls to 18.8 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 25.2 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

The current orbit solution is based on 96 observations and has a weighted RMS residual of 0.6165 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
1.4 AU
Eccentricity
0.2836
Perihelion
1.003 AU
Aphelion
1.79704 AU
Inclination
16.49°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
287.54°

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-Jan-19 22:10 0.270242 AU
40427557 km
16.55 km/s
2078-Jan-27 17:48 0.130663 AU
19546909 km
13.88 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
25.2

Orbit Quality

RMS
0.61652
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.

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