SpaceAtlas Space Object Data
NASA JPL SBDB · 187026

187026

187026 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.96 AU and a period of 0.94 yr.

Aten Observations: 1,560
Orbital Period · P
0.94 yr
v(q)
34.8 km/s
v(Q)
26.5 km/s
Diameter · ≈
1.2 km
TJ
6.16
Eccentricity · e
0.1355

Orbit and dynamics

The path is an ellipse reaching 0.83 AU from the Sun at perihelion and 1.09 AU at aphelion, a radial span of 0.26 AU.

Applying Kepler's third law to a = 0.96 AU gives an orbital period of 0.94 yr, or about 343 days.

An eccentricity of 0.136 makes the orbit moderately elongated.

A steep inclination of 30° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 34.8 km/s at perihelion and falls to 26.5 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 = 17.36 and an assumed geometric albedo of 0.14, the diameter works out to roughly 1.2 km.

Observation record and orbit quality

The current orbit solution is based on 1,560 observations and has a weighted RMS residual of 0.3939 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
0.9596 AU
Eccentricity
0.1355
Perihelion
0.83 AU
Aphelion
1.089626 AU
Inclination
30.0°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
357.96°

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

No close approaches to Earth are currently on record for this object.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
17.36

Orbit Quality

RMS
0.39387
Condition
0
Orbit ID
—
Data source: NASA JPL Small-Body Database . 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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