SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 WN

2019 WN

2019 WN belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.422 AU it takes 1.70 yr to circle the Sun.

Apollo Observations: 39
Orbital Period · P
1.70 yr
v(q)
33.9 km/s
v(Q)
18.4 km/s
Diameter · ≈
0.03 km
TJ
4.62
Eccentricity · e
0.2967

Orbit and dynamics

Between its closest point (1 AU) and its farthest (1.844 AU), the heliocentric distance changes by 0.844 AU over every revolution.

One full revolution takes 1.70 yr (619 days), computed from the semi-major axis of 1.422 AU.

An eccentricity of 0.297 makes the orbit moderately elongated.

The orbital plane is tilted 15.51° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 33.9 km/s at perihelion and falls to 18.4 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 25.24 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

Astrometry from 39 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4416 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
1.422 AU
Eccentricity
0.2967
Perihelion
1.0 AU
Aphelion
1.843907 AU
Inclination
15.51°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
325.33°

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
25.24

Orbit Quality

RMS
0.44163
Condition
7
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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