SpaceAtlas Space Object Data
NASA JPL SBDB · 2022 ST43

2022 ST43

2022 ST43 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.891 AU it takes 2.60 yr to circle the Sun.

Apollo Observations: 63
Orbital Period · P
2.60 yr
v(q)
43 km/s
v(Q)
10.9 km/s
Diameter · ≈
0.31 km
TJ
3.68
Eccentricity · e
0.5961

Orbit and dynamics

Between its closest point (0.764 AU) and its farthest (3.018 AU), the heliocentric distance changes by 2.254 AU over every revolution.

One full revolution takes 2.60 yr (950 days), computed from the semi-major axis of 1.891 AU.

The high eccentricity (0.596) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 17.19° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 43 km/s at perihelion and falls to 10.9 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 = 20.28 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.31 km.

Observation record and orbit quality

Astrometry from 63 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3937 arcseconds.

Condition code U = 5 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
1.891 AU
Eccentricity
0.5961
Perihelion
0.764 AU
Aphelion
3.018225 AU
Inclination
17.19°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
175.04°

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
2030-Apr-06 15:53 0.366533 AU
54832556 km
27.18 km/s
2035-Sep-17 03:15 0.277985 AU
41585897 km
16.06 km/s
2043-Apr-08 04:34 0.331368 AU
49571996 km
26.53 km/s
2048-Sep-17 06:32 0.276333 AU
41338799 km
16.28 km/s
2056-Apr-09 16:19 0.287309 AU
42980757 km
25.55 km/s
2061-Sep-21 05:27 0.274373 AU
41045550 km
17.81 km/s
2069-Apr-11 08:02 0.256119 AU
38314816 km
24.88 km/s
2074-Sep-23 13:45 0.274719 AU
41097380 km
18.82 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
20.28

Orbit Quality

RMS
0.39375
Condition
5
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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