SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 MA3

2020 MA3

2020 MA3 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.51 AU it takes 3.98 yr to circle the Sun.

Apollo Observations: 46
Orbital Period · P
3.98 yr
v(q)
44.9 km/s
v(Q)
7.9 km/s
Diameter · ≈
0.58 km
TJ
3.02
Eccentricity · e
0.702

Orbit and dynamics

The path is an ellipse reaching 0.748 AU from the Sun at perihelion and 4.272 AU at aphelion, a radial span of 3.524 AU.

Applying Kepler's third law to a = 2.51 AU gives an orbital period of 3.98 yr, or about 1,452 days.

The high eccentricity (0.702) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 16.55° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 44.9 km/s at perihelion and falls to 7.9 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 = 18.93 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.58 km.

Observation record and orbit quality

The current orbit solution is based on 46 observations and has a weighted RMS residual of 0.5363 arcseconds.

Condition code U = 0 means the orbit is very well determined, leaving only a small uncertainty in the future ephemeris.

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
2.51 AU
Eccentricity
0.702
Perihelion
0.748 AU
Aphelion
4.27202 AU
Inclination
16.55°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
134.56°

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
2033-Jan-01 15:47 0.448813 AU
67141497 km
32.14 km/s
2036-Dec-26 17:42 0.333298 AU
49860611 km
28.79 km/s
2040-Dec-18 03:20 0.173362 AU
25934518 km
24.29 km/s
2044-Dec-08 06:37 0.038459 AU
5753442 km
20.15 km/s
2048-Dec-01 11:52 0.074855 AU
11198198 km
18.05 km/s
2052-Nov-14 04:14 0.205906 AU
30803135 km
15.80 km/s
2056-Oct-19 04:58 0.302771 AU
45293945 km
16.21 km/s
2060-Sep-29 23:43 0.337265 AU
50454152 km
16.20 km/s
2064-Aug-29 06:28 0.332918 AU
49803805 km
13.98 km/s
2068-Jul-26 05:48 0.250715 AU
37506430 km
15.95 km/s
2072-Jul-17 06:50 0.233463 AU
34925541 km
19.71 km/s
2076-Jul-07 11:18 0.308084 AU
46088638 km
24.76 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
18.93

Orbit Quality

RMS
0.53627
Condition
0
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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