SpaceAtlas Space Object Data
NASA JPL SBDB · 2016 ED156

2016 ED156

2016 ED156 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.889 AU and a period of 0.84 yr.

Aten Observations: 47
Orbital Period · P
0.84 yr
v(q)
50.8 km/s
v(Q)
19.7 km/s
Diameter · ≈
0.07 km
TJ
6.59
Eccentricity · e
0.4419

Orbit and dynamics

Between its closest point (0.496 AU) and its farthest (1.281 AU), the heliocentric distance changes by 0.785 AU over every revolution.

One full revolution takes 0.84 yr (306 days), computed from the semi-major axis of 0.889 AU.

The high eccentricity (0.442) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 7.21° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 50.8 km/s at perihelion and falls to 19.7 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 = 23.56 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.07 km.

Observation record and orbit quality

Astrometry from 47 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4002 arcseconds.

Condition code U = 2 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
0.8886 AU
Eccentricity
0.4419
Perihelion
0.496 AU
Aphelion
1.281272 AU
Inclination
7.21°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
185.7°

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
2026-Nov-13 05:59 0.487904 AU
72989337 km
19.35 km/s
2027-May-09 22:58 0.276154 AU
41312077 km
9.56 km/s
2027-Jul-26 08:12 0.348574 AU
52145958 km
9.15 km/s
2031-Mar-10 11:28 0.392989 AU
58790312 km
25.32 km/s
2031-Nov-30 07:58 0.457479 AU
68437932 km
16.72 km/s
2032-Apr-20 06:25 0.303325 AU
45376805 km
10.10 km/s
2032-Aug-19 18:24 0.420637 AU
62926336 km
14.17 km/s
2033-May-20 11:45 0.490583 AU
73390105 km
27.77 km/s
2036-Dec-19 12:06 0.404891 AU
60570878 km
12.52 km/s
2037-Apr-02 21:04 0.288257 AU
43122584 km
10.07 km/s
2037-Sep-07 10:55 0.464679 AU
69514987 km
17.47 km/s
2038-May-27 09:03 0.349400 AU
52269500 km
23.04 km/s
2042-Mar-15 00:15 0.227080 AU
33970672 km
9.56 km/s
2042-Sep-24 06:29 0.491277 AU
73493983 km
19.74 km/s
2043-Jun-03 02:04 0.212127 AU
31733785 km
18.24 km/s
2047-Feb-25 22:33 0.107264 AU
16046492 km
10.36 km/s
2048-Jun-07 18:06 0.121703 AU
18206517 km
13.52 km/s
2052-Feb-26 02:12 0.063707 AU
9530450 km
14.95 km/s
2053-Jun-03 16:46 0.193366 AU
28927131 km
9.08 km/s
2057-Mar-04 14:08 0.266206 AU
39823786 km
21.30 km/s
2057-Nov-16 23:22 0.481807 AU
72077228 km
18.83 km/s
2058-May-04 12:06 0.290235 AU
43418479 km
9.77 km/s
2058-Aug-04 10:57 0.373525 AU
55878553 km
10.97 km/s
2062-Mar-14 09:29 0.486504 AU
72780034 km
28.39 km/s
2062-Dec-13 13:38 0.423118 AU
63297555 km
13.98 km/s
2063-Apr-08 07:20 0.299060 AU
44738693 km
10.15 km/s
2063-Sep-04 04:39 0.455585 AU
68154527 km
16.81 km/s
2064-May-26 05:44 0.370643 AU
55447329 km
23.76 km/s
2068-Mar-09 17:55 0.206986 AU
30964608 km
9.46 km/s
2068-Sep-28 11:14 0.495495 AU
74124988 km
20.12 km/s
2069-Jun-05 01:58 0.169653 AU
25379783 km
16.56 km/s
2073-Feb-24 04:05 0.020006 AU
2992782 km
13.34 km/s
2074-Jun-08 04:07 0.167107 AU
24998900 km
9.67 km/s
2078-Mar-05 02:28 0.270003 AU
40391901 km
21.43 km/s
2078-Nov-18 12:07 0.479376 AU
71713593 km
18.66 km/s
2079-May-03 04:01 0.294043 AU
43988238 km
9.85 km/s
2079-Aug-07 14:38 0.380882 AU
56979166 km
11.49 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
23.56

Orbit Quality

RMS
0.40017
Condition
2
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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