SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 MA1

2020 MA1

2020 MA1 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.888 AU and a period of 0.84 yr.

Aten Observations: 29
Orbital Period · P
0.84 yr
v(q)
38.9 km/s
v(Q)
25.7 km/s
Diameter · ≈
0.03 km
TJ
6.66
Eccentricity · e
0.2044

Orbit and dynamics

The path is an ellipse reaching 0.707 AU from the Sun at perihelion and 1.07 AU at aphelion, a radial span of 0.363 AU.

Applying Kepler's third law to a = 0.888 AU gives an orbital period of 0.84 yr, or about 306 days.

An eccentricity of 0.204 makes the orbit moderately elongated.

Its inclination of 4.9° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 38.9 km/s at perihelion and falls to 25.7 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 = 25.4 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 29 observations and has a weighted RMS residual of 0.5065 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
0.8883 AU
Eccentricity
0.2044
Perihelion
0.707 AU
Aphelion
1.069869 AU
Inclination
4.9°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
210.37°

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

No close approaches to Earth are currently on record for this object.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
25.4

Orbit Quality

RMS
0.5065
Condition
7
Orbit ID
—
Data source: NASA JPL Small-Body Database . 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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