SpaceAtlas Space Object Data
NASA JPL SBDB · 2015 DW215

2015 DW215

2015 DW215 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.96 AU once every 2.74 yr.

Amor Observations: 26
Orbital Period · P
2.74 yr
v(q)
30.6 km/s
v(Q)
14.8 km/s
Diameter · ≈
0.11 km
TJ
3.8
Eccentricity · e
0.3486

Orbit and dynamics

The path is an ellipse reaching 1.277 AU from the Sun at perihelion and 2.643 AU at aphelion, a radial span of 1.366 AU.

Applying Kepler's third law to a = 1.96 AU gives an orbital period of 2.74 yr, or about 1,002 days.

An eccentricity of 0.349 makes the orbit moderately elongated.

Its inclination of 4.72° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 30.6 km/s at perihelion and falls to 14.8 km/s at aphelion.

Its perihelion lies just outside Earth's orbit, which is why it is classed as Earth-approaching rather than Earth-crossing.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 22.6 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.11 km.

Observation record and orbit quality

The current orbit solution is based on 26 observations and has a weighted RMS residual of 0.606 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
1.96 AU
Eccentricity
0.3486
Perihelion
1.277 AU
Aphelion
2.643256 AU
Inclination
4.72°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
41.42°

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
2037-Mar-24 07:06 0.358751 AU
53668368 km
1.32 km/s
2048-Apr-06 09:42 0.418016 AU
62534258 km
2.42 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
22.6

Orbit Quality

RMS
0.60604
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.

Keep exploring

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