SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 MW2

2020 MW2

2020 MW2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.989 AU it takes 2.81 yr to circle the Sun.

Apollo Observations: 28
Orbital Period · P
2.81 yr
v(q)
44.8 km/s
v(Q)
10 km/s
Diameter · ≈
0.2 km
TJ
3.56
Eccentricity · e
0.6361

Orbit and dynamics

Between its closest point (0.724 AU) and its farthest (3.254 AU), the heliocentric distance changes by 2.53 AU over every revolution.

One full revolution takes 2.81 yr (1,025 days), computed from the semi-major axis of 1.989 AU.

The high eccentricity (0.636) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 7.48° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 44.8 km/s at perihelion and falls to 10 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 = 21.2 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.2 km.

Observation record and orbit quality

Astrometry from 28 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4464 arcseconds.

Condition code U = 6 indicates a moderately constrained orbit; predictions decades ahead still carry noticeable uncertainty.

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
1.989 AU
Eccentricity
0.6361
Perihelion
0.724 AU
Aphelion
3.254203 AU
Inclination
7.48°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
68.1°

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
2037-Jan-05 14:04 0.368986 AU
55199577 km
29.53 km/s
2048-Jul-01 09:17 0.098307 AU
14706524 km
20.12 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
21.2

Orbit Quality

RMS
0.44643
Condition
6
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

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