SpaceAtlas Space Object Data
NASA JPL SBDB · 2008 DL4

2008 DL4

2008 DL4 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.93 AU and a period of 0.90 yr.

Aten Observations: 32
Orbital Period · P
0.90 yr
v(q)
35 km/s
v(Q)
27.3 km/s
Diameter · ≈
0.01 km
TJ
6.44
Eccentricity · e
0.1229

Orbit and dynamics

Between its closest point (0.815 AU) and its farthest (1.044 AU), the heliocentric distance changes by 0.229 AU over every revolution.

One full revolution takes 0.90 yr (327 days), computed from the semi-major axis of 0.93 AU.

An eccentricity of 0.123 makes the orbit moderately elongated.

Its inclination of 3.2° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 35 km/s at perihelion and falls to 27.3 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 = 26.9 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 32 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5584 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
0.9297 AU
Eccentricity
0.1229
Perihelion
0.815 AU
Aphelion
1.04396 AU
Inclination
3.2°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
270.9°

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
2033-Dec-21 06:03 0.135023 AU
20199144 km
2.70 km/s
2034-May-02 12:27 0.057374 AU
8583094 km
2.67 km/s
2042-Feb-22 03:10 0.236809 AU
35426101 km
10.91 km/s
2042-Oct-09 10:35 0.185210 AU
27707083 km
5.31 km/s
2043-May-24 04:57 0.210077 AU
31427112 km
9.73 km/s
2051-Feb-25 00:30 0.008237 AU
1232250 km
3.16 km/s
2051-Jul-25 02:19 0.128294 AU
19192567 km
3.34 km/s
2059-Feb-16 16:37 0.010807 AU
1616668 km
5.28 km/s
2060-May-12 00:06 0.243225 AU
36385939 km
16.12 km/s
2067-Feb-21 01:12 0.144141 AU
21563228 km
10.71 km/s
2068-May-18 18:22 0.166750 AU
24945510 km
10.79 km/s
2075-Feb-28 15:11 0.403750 AU
60400193 km
16.20 km/s
2075-Nov-14 11:58 0.164623 AU
24627229 km
4.52 km/s
2076-May-23 06:54 0.082823 AU
12390131 km
5.47 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
26.9

Orbit Quality

RMS
0.55843
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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