SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 JE3

2017 JE3

2017 JE3 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.075 AU it takes 1.11 yr to circle the Sun.

Apollo Observations: 47
Orbital Period · P
1.11 yr
v(q)
47.4 km/s
v(Q)
17.4 km/s
Diameter · ≈
0.14 km
TJ
5.64
Eccentricity · e
0.4629

Orbit and dynamics

Between its closest point (0.577 AU) and its farthest (1.573 AU), the heliocentric distance changes by 0.996 AU over every revolution.

One full revolution takes 1.11 yr (407 days), computed from the semi-major axis of 1.075 AU.

The high eccentricity (0.463) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 6.98° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 47.4 km/s at perihelion and falls to 17.4 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 = 22.02 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.14 km.

Observation record and orbit quality

Astrometry from 47 individual observations underpins this orbit; the fit leaves an RMS residual of 0.6432 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
1.075 AU
Eccentricity
0.4629
Perihelion
0.577 AU
Aphelion
1.572617 AU
Inclination
6.98°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
122.09°

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
2033-Sep-11 10:21 0.098798 AU
14779968 km
15.36 km/s
2043-Sep-22 14:06 0.175296 AU
26223946 km
9.84 km/s
2046-Apr-19 00:22 0.020172 AU
3017625 km
13.89 km/s
2056-Apr-25 17:39 0.166204 AU
24863738 km
19.08 km/s
2062-Sep-05 15:22 0.192396 AU
28781966 km
19.14 km/s
2072-Sep-12 22:22 0.089532 AU
13393799 km
14.37 km/s
2075-Apr-17 06:47 0.195329 AU
29220848 km
9.15 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
22.02

Orbit Quality

RMS
0.6432
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

Explore asteroids, comets and near-Earth objects with JPL orbital data.