SpaceAtlas Space Object Data
NASA JPL SBDB · 2016 DW1

2016 DW1

2016 DW1 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.143 AU it takes 1.22 yr to circle the Sun.

Apollo Observations: 61
Orbital Period · P
1.22 yr
v(q)
34.1 km/s
v(Q)
22.7 km/s
Diameter · ≈
0.02 km
TJ
5.45
Eccentricity · e
0.2003

Orbit and dynamics

The path is an ellipse reaching 0.914 AU from the Sun at perihelion and 1.372 AU at aphelion, a radial span of 0.458 AU.

Applying Kepler's third law to a = 1.143 AU gives an orbital period of 1.22 yr, or about 446 days.

An eccentricity of 0.2 makes the orbit moderately elongated.

The orbital plane is tilted 13.57° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 34.1 km/s at perihelion and falls to 22.7 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 = 25.9 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

The current orbit solution is based on 61 observations and has a weighted RMS residual of 0.4305 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
1.143 AU
Eccentricity
0.2003
Perihelion
0.914 AU
Aphelion
1.371943 AU
Inclination
13.57°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
96.38°

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
2027-Mar-03 23:14 0.035508 AU
5311938 km
9.20 km/s
2027-Sep-14 09:10 0.275789 AU
41257504 km
7.73 km/s
2033-Aug-16 07:07 0.128001 AU
19148734 km
15.59 km/s
2066-Aug-12 16:16 0.108572 AU
16242209 km
9.21 km/s
2071-Feb-18 19:17 0.125530 AU
18779003 km
17.81 km/s
2077-Aug-15 13:08 0.114052 AU
17061875 km
7.92 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
25.9

Orbit Quality

RMS
0.43049
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

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