SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 RF

2019 RF

2019 RF is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.235 AU once every 1.37 yr.

Amor Observations: 64
Orbital Period · P
1.37 yr
v(q)
30.9 km/s
v(Q)
23.3 km/s
Diameter · ≈
0.06 km
TJ
5.12
Eccentricity · e
0.1398

Orbit and dynamics

The path is an ellipse reaching 1.062 AU from the Sun at perihelion and 1.408 AU at aphelion, a radial span of 0.346 AU.

Applying Kepler's third law to a = 1.235 AU gives an orbital period of 1.37 yr, or about 501 days.

An eccentricity of 0.14 makes the orbit moderately elongated.

A steep inclination of 20.42° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 30.9 km/s at perihelion and falls to 23.3 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 = 23.75 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.06 km.

Observation record and orbit quality

The current orbit solution is based on 64 observations and has a weighted RMS residual of 0.5183 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
1.235 AU
Eccentricity
0.1398
Perihelion
1.062 AU
Aphelion
1.407653 AU
Inclination
20.42°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
7.75°

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
2030-Sep-04 16:31 0.109783 AU
16423246 km
10.49 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
23.75

Orbit Quality

RMS
0.51835
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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