SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 ES2

2019 ES2

2019 ES2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.257 AU it takes 1.41 yr to circle the Sun.

Apollo Observations: 21
Orbital Period · P
1.41 yr
v(q)
34.7 km/s
v(Q)
20.3 km/s
Diameter · ≈
0.02 km
TJ
5.09
Eccentricity · e
0.2612

Orbit and dynamics

The path is an ellipse reaching 0.929 AU from the Sun at perihelion and 1.585 AU at aphelion, a radial span of 0.656 AU.

Applying Kepler's third law to a = 1.257 AU gives an orbital period of 1.41 yr, or about 515 days.

An eccentricity of 0.261 makes the orbit moderately elongated.

Its inclination of 0.92° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 34.7 km/s at perihelion and falls to 20.3 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 = 25.9 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

The current orbit solution is based on 21 observations and has a weighted RMS residual of 0.3412 arcseconds.

Condition code U = 8 signals a poorly constrained orbit, so its future path should be treated as provisional.

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
1.257 AU
Eccentricity
0.2612
Perihelion
0.929 AU
Aphelion
1.585328 AU
Inclination
0.92°
Orbital Period
— yr
Epoch
2458558.5
Mean Anomaly
327.24°

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
2047-Aug-01 12:02 0.191574 AU
28659125 km
16.38 km/s
2050-Feb-22 10:10 0.370069 AU
55361589 km
20.03 km/s
2057-Mar-11 06:15 0.039948 AU
5976154 km
10.13 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
25.9

Orbit Quality

RMS
0.34124
Condition
8
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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