SpaceAtlas Space Object Data
NASA JPL SBDB · 2016 ES85

2016 ES85

2016 ES85 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.969 AU and a period of 0.95 yr.

Aten Observations: 31
Orbital Period · P
0.95 yr
v(q)
33.1 km/s
v(Q)
27.7 km/s
Diameter · ≈
0 km
TJ
6.23
Eccentricity · e
0.0896

Orbit and dynamics

Between its closest point (0.882 AU) and its farthest (1.056 AU), the heliocentric distance changes by 0.174 AU over every revolution.

One full revolution takes 0.95 yr (348 days), computed from the semi-major axis of 0.969 AU.

With e = 0.09, the orbit is close to circular.

Its inclination of 2.24° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 33.1 km/s at perihelion and falls to 27.7 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

No direct size measurement is available; from an absolute magnitude of H = 29.7 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0 km.

Observation record and orbit quality

Astrometry from 31 individual observations underpins this orbit; the fit leaves an RMS residual of 0.6966 arcseconds.

Condition code U = 5 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
0.9691 AU
Eccentricity
0.0896
Perihelion
0.882 AU
Aphelion
1.055931 AU
Inclination
2.24°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
155.85°

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
2034-Nov-07 06:20 0.227083 AU
33971182 km
10.13 km/s
2035-Nov-19 18:06 0.057687 AU
8629895 km
2.01 km/s
2036-Jun-20 04:48 0.134924 AU
20184308 km
3.68 km/s
2037-Mar-16 10:32 0.065480 AU
9795732 km
5.32 km/s
2038-Mar-06 22:10 0.366765 AU
54867231 km
14.39 km/s
2053-Nov-16 06:03 0.438479 AU
65595544 km
17.05 km/s
2054-Nov-04 16:27 0.138806 AU
20765040 km
7.89 km/s
2055-Aug-28 09:59 0.105861 AU
15836628 km
3.22 km/s
2057-Mar-13 07:29 0.148231 AU
22175051 km
8.26 km/s
2058-Mar-02 17:08 0.447494 AU
66944079 km
17.32 km/s
2073-Nov-12 19:04 0.376980 AU
56395457 km
14.73 km/s
2074-Nov-01 09:09 0.080366 AU
12022508 km
5.62 km/s
2075-Aug-03 13:57 0.129544 AU
19379525 km
3.73 km/s
2076-Feb-20 23:03 0.050121 AU
7498003 km
2.40 km/s
2077-Mar-11 11:20 0.214083 AU
32026372 km
9.82 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
29.7

Orbit Quality

RMS
0.69664
Condition
5
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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