SpaceAtlas Space Object Data
NASA JPL SBDB · 2022 MA1

2022 MA1

2022 MA1 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.544 AU it takes 1.92 yr to circle the Sun.

Apollo Observations: 103
Orbital Period · P
1.92 yr
v(q)
35.4 km/s
v(Q)
16.2 km/s
Diameter · ≈
0.11 km
TJ
4.31
Eccentricity · e
0.3717

Orbit and dynamics

The path is an ellipse reaching 0.97 AU from the Sun at perihelion and 2.118 AU at aphelion, a radial span of 1.148 AU.

Applying Kepler's third law to a = 1.544 AU gives an orbital period of 1.92 yr, or about 701 days.

An eccentricity of 0.372 makes the orbit moderately elongated.

A steep inclination of 22.35° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 35.4 km/s at perihelion and falls to 16.2 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 = 22.5 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.11 km.

Observation record and orbit quality

The current orbit solution is based on 103 observations and has a weighted RMS residual of 0.4127 arcseconds.

Condition code U = 4 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
1.544 AU
Eccentricity
0.3717
Perihelion
0.97 AU
Aphelion
2.117905 AU
Inclination
22.35°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
357.47°

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
2045-Jul-17 14:36 0.209798 AU
31385297 km
12.48 km/s
2047-Jun-17 15:21 0.288516 AU
43161333 km
19.65 km/s
2068-Aug-12 06:40 0.384529 AU
57524750 km
13.68 km/s
2070-Jun-27 03:04 0.102548 AU
15340965 km
15.84 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
22.5

Orbit Quality

RMS
0.41265
Condition
4
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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