SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 OD

2019 OD

2019 OD belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.383 AU it takes 3.68 yr to circle the Sun.

Apollo Observations: 135
Orbital Period · P
3.68 yr
v(q)
47.1 km/s
v(Q)
7.9 km/s
Diameter · ≈
0.07 km
TJ
3.13
Eccentricity · e
0.7124

Orbit and dynamics

The path is an ellipse reaching 0.685 AU from the Sun at perihelion and 4.081 AU at aphelion, a radial span of 3.396 AU.

Applying Kepler's third law to a = 2.383 AU gives an orbital period of 3.68 yr, or about 1,344 days.

The high eccentricity (0.712) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

Its inclination of 0.62° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 47.1 km/s at perihelion and falls to 7.9 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 = 23.4 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.07 km.

Observation record and orbit quality

The current orbit solution is based on 135 observations and has a weighted RMS residual of 0.2076 arcseconds.

Condition code U = 3 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
2.383 AU
Eccentricity
0.7124
Perihelion
0.685 AU
Aphelion
4.080649 AU
Inclination
0.62°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
301.09°

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
2030-Aug-24 19:04 0.239141 AU
35774998 km
14.43 km/s
2041-Aug-11 16:15 0.190793 AU
28542218 km
14.55 km/s
2052-Jul-20 05:58 0.022367 AU
3346008 km
20.39 km/s
2063-Jul-01 05:44 0.378424 AU
56611378 km
30.98 km/s
2071-Jan-20 06:06 0.440706 AU
65928733 km
33.20 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
23.4

Orbit Quality

RMS
0.20755
Condition
3
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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