SpaceAtlas Space Object Data
NASA JPL SBDB · 2022 ST124

2022 ST124

2022 ST124 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.089 AU once every 1.14 yr.

Amor Observations: 48
Orbital Period · P
1.14 yr
v(q)
30.2 km/s
v(Q)
27 km/s
Diameter · ≈
0.03 km
TJ
5.69
Eccentricity · e
0.0548

Orbit and dynamics

Between its closest point (1.029 AU) and its farthest (1.149 AU), the heliocentric distance changes by 0.12 AU over every revolution.

One full revolution takes 1.14 yr (415 days), computed from the semi-major axis of 1.089 AU.

With e = 0.055, the orbit is close to circular.

Its inclination of 1.42° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 30.2 km/s at perihelion and falls to 27 km/s at aphelion.

Its perihelion lies just outside Earth's orbit, which is why it is classed as Earth-approaching rather than Earth-crossing.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 25.58 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

Astrometry from 48 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5042 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
1.089 AU
Eccentricity
0.0548
Perihelion
1.029 AU
Aphelion
1.148677 AU
Inclination
1.42°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
104.92°

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-Aug-05 19:29 0.317947 AU
47564244 km
9.53 km/s
2031-Feb-01 14:02 0.150345 AU
22491277 km
2.94 km/s
2039-Apr-14 05:02 0.139776 AU
20910236 km
2.56 km/s
2047-Sep-01 23:25 0.024206 AU
3621186 km
1.06 km/s
2056-Sep-02 16:46 0.050010 AU
7481365 km
1.53 km/s
2064-Aug-07 08:55 0.392590 AU
58730622 km
11.78 km/s
2065-Mar-01 05:46 0.151352 AU
22641888 km
3.00 km/s
2073-Sep-06 00:13 0.020417 AU
3054384 km
1.01 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
25.58

Orbit Quality

RMS
0.50416
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.

Keep exploring

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