SpaceAtlas Space Object Data
NASA JPL SBDB · 2013 LE1

2013 LE1

2013 LE1 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.185 AU it takes 1.29 yr to circle the Sun.

Apollo Observations: 90
Orbital Period · P
1.29 yr
v(q)
44.4 km/s
v(Q)
16.9 km/s
Diameter · ≈
0.11 km
TJ
5.23
Eccentricity · e
0.4493

Orbit and dynamics

Between its closest point (0.653 AU) and its farthest (1.717 AU), the heliocentric distance changes by 1.064 AU over every revolution.

One full revolution takes 1.29 yr (471 days), computed from the semi-major axis of 1.185 AU.

The high eccentricity (0.449) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 8.93° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 44.4 km/s at perihelion and falls to 16.9 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 = 22.56 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.11 km.

Observation record and orbit quality

Astrometry from 90 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3516 arcseconds.

Condition code U = 1 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
1.185 AU
Eccentricity
0.4493
Perihelion
0.653 AU
Aphelion
1.717421 AU
Inclination
8.93°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
323.56°

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
2028-Jan-03 01:02 0.092395 AU
13822164 km
14.63 km/s
2031-May-25 11:29 0.472548 AU
70692206 km
10.07 km/s
2031-Sep-13 19:10 0.362125 AU
54173201 km
14.18 km/s
2035-Jun-10 10:18 0.258373 AU
38652125 km
21.48 km/s
2037-Jan-14 12:31 0.252415 AU
37760707 km
21.23 km/s
2040-Oct-13 04:47 0.354748 AU
53069512 km
14.83 km/s
2044-Jun-19 10:08 0.071516 AU
10698583 km
15.08 km/s
2046-Jan-26 19:02 0.487847 AU
72980820 km
28.72 km/s
2049-Nov-30 09:25 0.242037 AU
36208285 km
10.93 km/s
2053-Jun-12 17:46 0.345548 AU
51693206 km
8.41 km/s
2053-Aug-15 15:42 0.319167 AU
47746659 km
11.03 km/s
2057-Jun-04 22:22 0.375766 AU
56213814 km
25.06 km/s
2059-Jan-10 01:01 0.161939 AU
24225797 km
18.20 km/s
2062-Oct-09 10:46 0.358905 AU
53691350 km
14.94 km/s
2066-Jun-21 18:34 0.067583 AU
10110261 km
14.15 km/s
2071-Dec-06 20:35 0.222565 AU
33295199 km
10.56 km/s
2075-Jun-10 20:51 0.360746 AU
53966824 km
8.61 km/s
2075-Aug-19 20:36 0.326542 AU
48849922 km
11.52 km/s
2079-Jun-06 01:08 0.365143 AU
54624574 km
24.72 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
22.56

Orbit Quality

RMS
0.35161
Condition
1
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.

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