SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 DL123

2017 DL123

2017 DL123 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.883 AU and a period of 0.83 yr.

Aten Observations: 20
Orbital Period · P
0.83 yr
v(q)
38.9 km/s
v(Q)
25.8 km/s
Diameter · ≈
0 km
TJ
6.65
Eccentricity · e
0.2031

Orbit and dynamics

The path is an ellipse reaching 0.704 AU from the Sun at perihelion and 1.062 AU at aphelion, a radial span of 0.358 AU.

Applying Kepler's third law to a = 0.883 AU gives an orbital period of 0.83 yr, or about 303 days.

An eccentricity of 0.203 makes the orbit moderately elongated.

The orbital plane is tilted 19.8° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 38.9 km/s at perihelion and falls to 25.8 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 = 29.88 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0 km.

Observation record and orbit quality

The current orbit solution is based on 20 observations and has a weighted RMS residual of 0.76 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
0.883 AU
Eccentricity
0.2031
Perihelion
0.704 AU
Aphelion
1.062337 AU
Inclination
19.8°
Orbital Period
— yr
Epoch
2460600.5
Mean Anomaly
196.51°

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

No close approaches to Earth are currently on record for this object.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
29.88

Orbit Quality

RMS
0.76
Condition
7
Orbit ID
—
Data source: NASA JPL Small-Body Database . 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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