SpaceAtlas Space Object Data
NASA JPL SBDB · 153814

153814

153814 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.712 AU it takes 2.24 yr to circle the Sun.

Apollo Observations: 1,024
Orbital Period · P
2.24 yr
v(q)
37.8 km/s
v(Q)
13.7 km/s
Diameter · ≈
0.78 km
TJ
4.05
Eccentricity · e
0.4673

Orbit and dynamics

Between its closest point (0.912 AU) and its farthest (2.512 AU), the heliocentric distance changes by 1.6 AU over every revolution.

One full revolution takes 2.24 yr (818 days), computed from the semi-major axis of 1.712 AU.

The high eccentricity (0.467) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

Its inclination of 1.92° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 37.8 km/s at perihelion and falls to 13.7 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

The measured diameter is 0.93 km, a value from direct size determination rather than from brightness alone.

Its geometric albedo of 0.097 indicates a very dark, carbonaceous-type surface.

Observation record and orbit quality

Astrometry from 1,024 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4105 arcseconds.

Condition code U = 0 means the orbit is very well determined, leaving only a small uncertainty in the future ephemeris.

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
1.712 AU
Eccentricity
0.4673
Perihelion
0.912 AU
Aphelion
2.512018 AU
Inclination
1.92°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
14.62°

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
2028-Jun-26 05:23 0.001662 AU
248688 km
10.24 km/s
2052-Aug-02 10:08 0.101458 AU
15177949 km
8.34 km/s
2076-Sep-20 23:27 0.062846 AU
9401616 km
8.67 km/s

Distances in astronomical units (AU) and kilometres. Source: NASA/JPL CNEOS Close Approach Data API.

Physical Parameters

Diameter
0.932 km
Albedo
0.097
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
18.28

Orbit Quality

RMS
0.41047
Condition
0
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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