SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 WT

2019 WT

2019 WT is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.344 AU once every 1.56 yr.

Amor Observations: 68
Orbital Period · P
1.56 yr
v(q)
31.2 km/s
v(Q)
21.1 km/s
Diameter · ≈
0.06 km
TJ
4.85
Eccentricity · e
0.1928

Orbit and dynamics

Between its closest point (1.085 AU) and its farthest (1.603 AU), the heliocentric distance changes by 0.518 AU over every revolution.

One full revolution takes 1.56 yr (569 days), computed from the semi-major axis of 1.344 AU.

An eccentricity of 0.193 makes the orbit moderately elongated.

The orbital plane is tilted 10.24° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 31.2 km/s at perihelion and falls to 21.1 km/s at aphelion.

Its perihelion lies just outside Earth's orbit, which is why it is classed as Earth-approaching rather than Earth-crossing.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 23.72 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.06 km.

Observation record and orbit quality

Astrometry from 68 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4068 arcseconds.

Condition code U = 5 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
1.344 AU
Eccentricity
0.1928
Perihelion
1.085 AU
Aphelion
1.603123 AU
Inclination
10.24°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
93.18°

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
2031-Jan-23 17:23 0.439480 AU
65745284 km
5.84 km/s
2033-Nov-09 10:55 0.191265 AU
28612815 km
7.64 km/s
2036-Jun-08 14:13 0.490166 AU
73327850 km
8.13 km/s
2044-Dec-30 17:02 0.341028 AU
51017007 km
5.35 km/s
2047-Jul-28 12:14 0.320303 AU
47916666 km
4.57 km/s
2047-Nov-05 22:26 0.345008 AU
51612458 km
10.97 km/s
2058-Dec-03 00:28 0.212002 AU
31715087 km
5.37 km/s
2061-Jul-07 04:27 0.381338 AU
57047412 km
6.35 km/s
2072-Nov-16 08:44 0.124651 AU
18647473 km
5.63 km/s
2075-Jun-23 04:38 0.433140 AU
64796761 km
7.37 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
23.72

Orbit Quality

RMS
0.40678
Condition
5
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.

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