SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 PB3

2019 PB3

2019 PB3 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 2.491 AU once every 3.93 yr.

Amor Observations: 41
Orbital Period · P
3.93 yr
v(q)
31.8 km/s
v(Q)
11.2 km/s
Diameter · ≈
0.15 km
TJ
3.27
Eccentricity · e
0.4801

Orbit and dynamics

Between its closest point (1.295 AU) and its farthest (3.687 AU), the heliocentric distance changes by 2.392 AU over every revolution.

One full revolution takes 3.93 yr (1,436 days), computed from the semi-major axis of 2.491 AU.

The high eccentricity (0.48) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 14.34° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 31.8 km/s at perihelion and falls to 11.2 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 = 21.91 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.15 km.

Observation record and orbit quality

Astrometry from 41 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4257 arcseconds.

Condition code U = 1 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
2.491 AU
Eccentricity
0.4801
Perihelion
1.295 AU
Aphelion
3.686929 AU
Inclination
14.34°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
268.25°

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
2066-Jul-28 12:05 0.396910 AU
59376854 km
10.03 km/s
2070-Aug-03 17:02 0.391537 AU
58573139 km
8.54 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
21.91

Orbit Quality

RMS
0.4257
Condition
1
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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