SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 EL

2017 EL

2017 EL is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.853 AU and a period of 0.79 yr.

Aten Observations: 50
Orbital Period · P
0.79 yr
v(q)
41.7 km/s
v(Q)
25 km/s
Diameter · ≈
0.03 km
TJ
6.88
Eccentricity · e
0.2509

Orbit and dynamics

Between its closest point (0.639 AU) and its farthest (1.067 AU), the heliocentric distance changes by 0.428 AU over every revolution.

One full revolution takes 0.79 yr (288 days), computed from the semi-major axis of 0.853 AU.

An eccentricity of 0.251 makes the orbit moderately elongated.

The orbital plane is tilted 8.39° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 41.7 km/s at perihelion and falls to 25 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 = 25.1 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

Astrometry from 50 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4407 arcseconds.

Condition code U = 6 indicates a moderately constrained orbit; predictions decades ahead still carry noticeable uncertainty.

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
0.8526 AU
Eccentricity
0.2509
Perihelion
0.639 AU
Aphelion
1.066517 AU
Inclination
8.39°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
60.96°

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-Feb-17 17:56 0.080273 AU
12008651 km
9.06 km/s
2028-Jul-28 10:21 0.311593 AU
46613691 km
9.34 km/s
2031-Dec-01 12:14 0.285193 AU
42664335 km
7.43 km/s
2032-Apr-18 13:25 0.096845 AU
14487812 km
6.99 km/s
2035-Oct-07 13:24 0.359663 AU
53804793 km
12.75 km/s
2036-Apr-22 15:25 0.343050 AU
51319538 km
17.78 km/s
2039-Feb-18 18:53 0.193443 AU
28938612 km
13.86 km/s
2039-Aug-21 08:19 0.340217 AU
50895772 km
11.61 km/s
2047-Apr-27 10:53 0.172405 AU
25791428 km
12.84 km/s
2050-Feb-23 10:58 0.290355 AU
43436511 km
18.77 km/s
2062-Apr-21 11:22 0.242932 AU
36342145 km
19.23 km/s
2065-Feb-17 05:15 0.060163 AU
9000218 km
12.59 km/s
2073-Apr-26 12:57 0.105903 AU
15842936 km
13.51 km/s
2076-Feb-23 12:13 0.143796 AU
21511537 km
18.33 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
25.1

Orbit Quality

RMS
0.44074
Condition
6
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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