SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 XO

2020 XO

2020 XO belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.078 AU it takes 1.12 yr to circle the Sun.

Apollo Observations: 54
Orbital Period · P
1.12 yr
v(q)
47.3 km/s
v(Q)
17.4 km/s
Diameter · ≈
0.06 km
TJ
5.63
Eccentricity · e
0.4621

Orbit and dynamics

The path is an ellipse reaching 0.58 AU from the Sun at perihelion and 1.576 AU at aphelion, a radial span of 0.996 AU.

Applying Kepler's third law to a = 1.078 AU gives an orbital period of 1.12 yr, or about 409 days.

The high eccentricity (0.462) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 7.77° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 47.3 km/s at perihelion and falls to 17.4 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 = 24 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.06 km.

Observation record and orbit quality

The current orbit solution is based on 54 observations and has a weighted RMS residual of 0.1939 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
1.078 AU
Eccentricity
0.4621
Perihelion
0.58 AU
Aphelion
1.576144 AU
Inclination
7.77°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
272.17°

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
2029-Nov-30 11:40 0.232669 AU
34806829 km
24.26 km/s
2030-Nov-23 00:48 0.329676 AU
49318799 km
9.94 km/s
2032-Aug-16 16:27 0.386326 AU
57793587 km
9.86 km/s
2033-Jul-31 13:15 0.156947 AU
23478984 km
21.75 km/s
2039-Dec-17 16:18 0.007396 AU
1106450 km
12.10 km/s
2042-Jul-16 19:57 0.074178 AU
11096810 km
12.55 km/s
2048-Dec-03 16:20 0.023943 AU
3581884 km
21.91 km/s
2058-Dec-18 20:55 0.007414 AU
1109127 km
10.55 km/s
2077-Dec-18 19:40 0.013047 AU
1951735 km
10.30 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
24.0

Orbit Quality

RMS
0.19386
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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