SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 VH4

2019 VH4

2019 VH4 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.083 AU it takes 1.13 yr to circle the Sun.

Apollo Observations: 27
Orbital Period · P
1.13 yr
v(q)
37 km/s
v(Q)
22.1 km/s
Diameter · ≈
0.03 km
TJ
5.65
Eccentricity · e
0.2525

Orbit and dynamics

The path is an ellipse reaching 0.81 AU from the Sun at perihelion and 1.356 AU at aphelion, a radial span of 0.546 AU.

Applying Kepler's third law to a = 1.083 AU gives an orbital period of 1.13 yr, or about 412 days.

An eccentricity of 0.253 makes the orbit moderately elongated.

The orbital plane is tilted 15.93° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 37 km/s at perihelion and falls to 22.1 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 = 25.6 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

The current orbit solution is based on 27 observations and has a weighted RMS residual of 0.2456 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
1.083 AU
Eccentricity
0.2525
Perihelion
0.81 AU
Aphelion
1.356457 AU
Inclination
15.93°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
229.05°

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
2028-Nov-13 21:58 0.084540 AU
12647013 km
9.30 km/s
2030-May-25 14:00 0.107452 AU
16074572 km
15.97 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
25.6

Orbit Quality

RMS
0.24562
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

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