SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 WT3

2019 WT3

2019 WT3 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.487 AU it takes 1.81 yr to circle the Sun.

Apollo Observations: 102
Orbital Period · P
1.81 yr
v(q)
35.9 km/s
v(Q)
16.6 km/s
Diameter · ≈
0.04 km
TJ
4.46
Eccentricity · e
0.3668

Orbit and dynamics

Between its closest point (0.942 AU) and its farthest (2.032 AU), the heliocentric distance changes by 1.09 AU over every revolution.

One full revolution takes 1.81 yr (662 days), computed from the semi-major axis of 1.487 AU.

An eccentricity of 0.367 makes the orbit moderately elongated.

The orbital plane is tilted 15.06° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 35.9 km/s at perihelion and falls to 16.6 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 = 24.56 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.

Observation record and orbit quality

Astrometry from 102 individual observations underpins this orbit; the fit leaves an RMS residual of 0.2673 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
1.487 AU
Eccentricity
0.3668
Perihelion
0.942 AU
Aphelion
2.032432 AU
Inclination
15.06°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
191.63°

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
2029-Mar-15 07:05 0.338009 AU
50565498 km
13.02 km/s
2039-Nov-21 20:42 0.293232 AU
43866902 km
17.50 km/s
2048-Dec-28 11:27 0.153278 AU
22929999 km
9.24 km/s
2058-Mar-30 03:08 0.475903 AU
71194130 km
18.81 km/s
2068-Dec-04 03:15 0.080144 AU
11989357 km
12.32 km/s
2069-Apr-11 09:51 0.421700 AU
63085389 km
6.70 km/s
2078-Feb-25 08:29 0.284303 AU
42531140 km
10.05 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
24.56

Orbit Quality

RMS
0.26727
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

Explore asteroids, comets and near-Earth objects with JPL orbital data.