SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 VB4

2019 VB4

2019 VB4 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.119 AU it takes 1.18 yr to circle the Sun.

Apollo Observations: 34
Orbital Period · P
1.18 yr
v(q)
31.2 km/s
v(Q)
25.4 km/s
Diameter · ≈
0.02 km
TJ
5.57
Eccentricity · e
0.1023

Orbit and dynamics

The path is an ellipse reaching 1.005 AU from the Sun at perihelion and 1.233 AU at aphelion, a radial span of 0.228 AU.

Applying Kepler's third law to a = 1.119 AU gives an orbital period of 1.18 yr, or about 432 days.

An eccentricity of 0.102 makes the orbit moderately elongated.

The orbital plane is tilted 6.36° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 31.2 km/s at perihelion and falls to 25.4 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 26 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

The current orbit solution is based on 34 observations and has a weighted RMS residual of 0.5239 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
1.119 AU
Eccentricity
0.1023
Perihelion
1.005 AU
Aphelion
1.233474 AU
Inclination
6.36°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
249.85°

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
2032-Oct-27 18:15 0.109397 AU
16365565 km
7.58 km/s
2038-Jul-01 16:09 0.198381 AU
29677318 km
9.72 km/s
2045-Nov-03 00:37 0.300332 AU
44929089 km
13.68 km/s
2051-Jul-01 12:15 0.096552 AU
14444014 km
4.46 km/s
2064-Oct-28 12:57 0.055523 AU
8306159 km
4.22 km/s
2070-Jun-25 21:31 0.236357 AU
35358529 km
14.49 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
26.0

Orbit Quality

RMS
0.52387
Condition
7
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.