SpaceAtlas Space Object Data
NASA JPL SBDB · 2023 ES2

2023 ES2

2023 ES2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.279 AU it takes 1.45 yr to circle the Sun.

Apollo Observations: 35
Orbital Period · P
1.45 yr
v(q)
36.1 km/s
v(Q)
19.2 km/s
Diameter · ≈
0.22 km
TJ
4.88
Eccentricity · e
0.3066

Orbit and dynamics

Between its closest point (0.887 AU) and its farthest (1.671 AU), the heliocentric distance changes by 0.784 AU over every revolution.

One full revolution takes 1.45 yr (528 days), computed from the semi-major axis of 1.279 AU.

An eccentricity of 0.307 makes the orbit moderately elongated.

A steep inclination of 30.36° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 36.1 km/s at perihelion and falls to 19.2 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 = 21.07 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.22 km.

Observation record and orbit quality

Astrometry from 35 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4791 arcseconds.

Condition code U = 2 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
1.279 AU
Eccentricity
0.3066
Perihelion
0.887 AU
Aphelion
1.671141 AU
Inclination
30.36°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
221.57°

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
2032-Sep-22 16:19 0.177427 AU
26542708 km
17.88 km/s
2074-Aug-31 07:40 0.159562 AU
23870178 km
19.16 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
21.07

Orbit Quality

RMS
0.47913
Condition
2
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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