SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 DE

2017 DE

2017 DE belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.12 AU it takes 1.19 yr to circle the Sun.

Apollo Observations: 123
Orbital Period · P
1.19 yr
v(q)
35.9 km/s
v(Q)
22.1 km/s
Diameter · ≈
0.08 km
TJ
5.47
Eccentricity · e
0.2382

Orbit and dynamics

The path is an ellipse reaching 0.853 AU from the Sun at perihelion and 1.387 AU at aphelion, a radial span of 0.534 AU.

Applying Kepler's third law to a = 1.12 AU gives an orbital period of 1.19 yr, or about 433 days.

An eccentricity of 0.238 makes the orbit moderately elongated.

A steep inclination of 24.1° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 35.9 km/s at perihelion and falls to 22.1 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 = 23.3 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.08 km.

Observation record and orbit quality

The current orbit solution is based on 123 observations and has a weighted RMS residual of 0.4045 arcseconds.

Condition code U = 7 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
1.12 AU
Eccentricity
0.2382
Perihelion
0.853 AU
Aphelion
1.386784 AU
Inclination
24.1°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
241.54°

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
2030-Feb-22 09:13 0.148616 AU
22232687 km
12.39 km/s
2030-Aug-18 03:50 0.271159 AU
40564801 km
12.29 km/s
2036-Feb-17 19:51 0.095053 AU
14219704 km
18.59 km/s
2037-Sep-01 01:13 0.170418 AU
25494104 km
20.76 km/s
2049-Feb-22 11:42 0.065723 AU
9832069 km
14.38 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
23.3

Orbit Quality

RMS
0.40447
Condition
7
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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