SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 RK

2017 RK

2017 RK is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.243 AU once every 1.39 yr.

Amor Observations: 14
Orbital Period · P
1.39 yr
v(q)
31.7 km/s
v(Q)
22.5 km/s
Diameter · ≈
0.03 km
TJ
5.14
Eccentricity · e
0.1697

Orbit and dynamics

The path is an ellipse reaching 1.032 AU from the Sun at perihelion and 1.454 AU at aphelion, a radial span of 0.422 AU.

Applying Kepler's third law to a = 1.243 AU gives an orbital period of 1.39 yr, or about 506 days.

An eccentricity of 0.17 makes the orbit moderately elongated.

The orbital plane is tilted 7.24° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 31.7 km/s at perihelion and falls to 22.5 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 = 25.5 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 14 observations and has a weighted RMS residual of 0.1683 arcseconds.

Condition code U = 8 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
1.243 AU
Eccentricity
0.1697
Perihelion
1.032 AU
Aphelion
1.453937 AU
Inclination
7.24°
Orbital Period
— yr
Epoch
2457998.5
Mean Anomaly
0.58°

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
25.5

Orbit Quality

RMS
0.16828
Condition
8
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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