SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 OW3

2019 OW3

2019 OW3 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.556 AU it takes 1.94 yr to circle the Sun.

Apollo Observations: 79
Orbital Period · P
1.94 yr
v(q)
42.5 km/s
v(Q)
13.4 km/s
Diameter · ≈
0.14 km
TJ
4.25
Eccentricity · e
0.5198

Orbit and dynamics

The path is an ellipse reaching 0.747 AU from the Sun at perihelion and 2.365 AU at aphelion, a radial span of 1.618 AU.

Applying Kepler's third law to a = 1.556 AU gives an orbital period of 1.94 yr, or about 709 days.

The high eccentricity (0.52) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 14.69° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 42.5 km/s at perihelion and falls to 13.4 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 = 22.08 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.14 km.

Observation record and orbit quality

The current orbit solution is based on 79 observations and has a weighted RMS residual of 0.3568 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
1.556 AU
Eccentricity
0.5198
Perihelion
0.747 AU
Aphelion
2.364809 AU
Inclination
14.69°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
221.06°

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
2052-Jul-28 07:25 0.057469 AU
8597236 km
16.08 km/s
2058-Feb-10 14:37 0.156798 AU
23456645 km
20.41 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
22.08

Orbit Quality

RMS
0.35682
Condition
0
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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