SpaceAtlas Space Object Data
NASA JPL SBDB · 2015 DU

2015 DU

2015 DU belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.102 AU it takes 1.16 yr to circle the Sun.

Apollo Observations: 98
Orbital Period · P
1.16 yr
v(q)
31 km/s
v(Q)
26 km/s
Diameter · ≈
0.02 km
TJ
5.64
Eccentricity · e
0.0874

Orbit and dynamics

Between its closest point (1.005 AU) and its farthest (1.198 AU), the heliocentric distance changes by 0.193 AU over every revolution.

One full revolution takes 1.16 yr (423 days), computed from the semi-major axis of 1.102 AU.

With e = 0.087, the orbit is close to circular.

Its inclination of 2.75° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 31 km/s at perihelion and falls to 26 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 26.6 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

Astrometry from 98 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4907 arcseconds.

Condition code U = 3 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
1.102 AU
Eccentricity
0.0874
Perihelion
1.005 AU
Aphelion
1.198315 AU
Inclination
2.75°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
289.06°

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
2029-Oct-19 15:56 0.144619 AU
21634708 km
2.66 km/s
2030-Mar-14 10:09 0.202054 AU
30226884 km
6.88 km/s
2037-Jan-31 17:57 0.162115 AU
24251990 km
5.25 km/s
2037-May-26 07:38 0.134828 AU
20170032 km
1.84 km/s
2044-Aug-31 05:31 0.181362 AU
27131348 km
3.60 km/s
2045-Mar-28 19:21 0.417003 AU
62382820 km
13.26 km/s
2052-Feb-27 00:25 0.022885 AU
3423545 km
1.87 km/s
2059-Feb-16 13:59 0.054759 AU
8191770 km
2.26 km/s
2066-Jan-27 00:14 0.315529 AU
47202419 km
9.89 km/s
2066-Jul-12 17:54 0.175500 AU
26254377 km
3.18 km/s
2073-Sep-06 05:30 0.183676 AU
27477591 km
3.66 km/s
2074-Mar-31 18:42 0.409178 AU
61212154 km
13.20 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
26.6

Orbit Quality

RMS
0.49071
Condition
3
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.