SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 GF4

2019 GF4

2019 GF4 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.356 AU once every 1.58 yr.

Amor Observations: 32
Orbital Period · P
1.58 yr
v(q)
30.3 km/s
v(Q)
21.6 km/s
Diameter · ≈
0.05 km
TJ
4.84
Eccentricity · e
0.1677

Orbit and dynamics

Between its closest point (1.129 AU) and its farthest (1.583 AU), the heliocentric distance changes by 0.454 AU over every revolution.

One full revolution takes 1.58 yr (577 days), computed from the semi-major axis of 1.356 AU.

An eccentricity of 0.168 makes the orbit moderately elongated.

Its inclination of 1.7° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 30.3 km/s at perihelion and falls to 21.6 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 = 24.3 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.05 km.

Observation record and orbit quality

Astrometry from 32 individual observations underpins this orbit; the fit leaves an RMS residual of 0.317 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
1.356 AU
Eccentricity
0.1677
Perihelion
1.129 AU
Aphelion
1.583401 AU
Inclination
1.7°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
152.95°

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

No close approaches to Earth are currently on record for this object.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
24.3

Orbit Quality

RMS
0.317
Condition
5
Orbit ID
—
Data source: NASA JPL Small-Body Database . 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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