SpaceAtlas Space Object Data
NASA JPL SBDB · 2026 OW

2026 OW

2026 OW is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.954 AU and a period of 0.93 yr.

Aten Observations: 13
Orbital Period · P
0.93 yr
v(q)
37.9 km/s
v(Q)
24.6 km/s
Diameter · ≈
0.03 km
TJ
6.25
Eccentricity · e
0.2137

Orbit and dynamics

The path is an ellipse reaching 0.75 AU from the Sun at perihelion and 1.157 AU at aphelion, a radial span of 0.407 AU.

Applying Kepler's third law to a = 0.954 AU gives an orbital period of 0.93 yr, or about 340 days.

An eccentricity of 0.214 makes the orbit moderately elongated.

The orbital plane is tilted 19.52° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 37.9 km/s at perihelion and falls to 24.6 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 = 25.54 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

The current orbit solution is based on 13 observations and has a weighted RMS residual of 0.3279 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
0.9535 AU
Eccentricity
0.2137
Perihelion
0.75 AU
Aphelion
1.157263 AU
Inclination
19.52°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
70.74°

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-Jan-04 02:23 0.177973 AU
26624367 km
12.90 km/s
2039-Jul-17 22:33 0.114651 AU
17151610 km
13.74 km/s
2053-Jul-19 23:04 0.090094 AU
13477873 km
10.13 km/s
2066-Jul-16 22:19 0.056381 AU
8434497 km
12.01 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
25.54

Orbit Quality

RMS
0.32794
Condition
7
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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