SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 PX

2020 PX

2020 PX belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.036 AU it takes 1.05 yr to circle the Sun.

Apollo Observations: 21
Orbital Period · P
1.05 yr
v(q)
33.9 km/s
v(Q)
25.3 km/s
Diameter · ≈
0.03 km
TJ
5.9
Eccentricity · e
0.1464

Orbit and dynamics

Between its closest point (0.884 AU) and its farthest (1.188 AU), the heliocentric distance changes by 0.304 AU over every revolution.

One full revolution takes 1.05 yr (385 days), computed from the semi-major axis of 1.036 AU.

An eccentricity of 0.146 makes the orbit moderately elongated.

The orbital plane is tilted 7.36° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 33.9 km/s at perihelion and falls to 25.3 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 = 25.1 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

Astrometry from 21 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3211 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
1.036 AU
Eccentricity
0.1464
Perihelion
0.884 AU
Aphelion
1.18767 AU
Inclination
7.36°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
319.4°

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
2036-Dec-10 20:35 0.356291 AU
53300438 km
18.94 km/s
2040-Jul-03 21:21 0.091012 AU
13615202 km
8.15 km/s
2041-Jul-14 15:26 0.332735 AU
49776479 km
17.64 km/s
2056-Dec-25 16:38 0.112970 AU
16900118 km
11.21 km/s
2059-Jul-05 07:09 0.090510 AU
13540145 km
6.35 km/s
2060-Jul-11 15:21 0.298939 AU
44720565 km
15.72 km/s
2075-Dec-26 22:10 0.191751 AU
28685492 km
11.08 km/s
2077-Feb-21 16:26 0.093646 AU
14009268 km
5.27 km/s
2077-Aug-29 16:41 0.178752 AU
26740962 km
5.27 km/s
2078-Jul-04 09:22 0.105814 AU
15829483 km
6.72 km/s
2079-Jul-13 01:03 0.411752 AU
61597209 km
16.31 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
25.1

Orbit Quality

RMS
0.32106
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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