SpaceAtlas Space Object Data
NASA JPL SBDB · 893859

893859

893859 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.983 AU and a period of 0.97 yr.

Aten Observations: 97
Orbital Period · P
0.97 yr
v(q)
47.5 km/s
v(Q)
19 km/s
Diameter · ≈
0.08 km
TJ
6.08
Eccentricity · e
0.4287

Orbit and dynamics

Between its closest point (0.561 AU) and its farthest (1.404 AU), the heliocentric distance changes by 0.843 AU over every revolution.

One full revolution takes 0.97 yr (356 days), computed from the semi-major axis of 0.983 AU.

The high eccentricity (0.429) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

Its inclination of 1.62° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 47.5 km/s at perihelion and falls to 19 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 = 23.14 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.08 km.

Observation record and orbit quality

Astrometry from 97 individual observations underpins this orbit; the fit leaves an RMS residual of 0.6299 arcseconds.

Condition code U = 1 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
0.9828 AU
Eccentricity
0.4287
Perihelion
0.561 AU
Aphelion
1.404126 AU
Inclination
1.62°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
40.36°

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-Feb-14 19:12 0.009473 AU
1417114 km
13.72 km/s
2028-Feb-09 01:10 0.178680 AU
26730105 km
19.05 km/s
2050-Oct-17 23:03 0.145370 AU
21746983 km
17.92 km/s
2051-Oct-12 13:44 0.039902 AU
5969315 km
12.64 km/s
2060-Feb-12 21:45 0.176050 AU
26336678 km
9.01 km/s
2061-Feb-14 12:20 0.008177 AU
1223214 km
13.51 km/s
2062-Feb-08 23:44 0.167879 AU
25114280 km
18.73 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
23.14

Orbit Quality

RMS
0.62994
Condition
1
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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