SpaceAtlas Space Object Data
NASA JPL SBDB · 2003 FK1

2003 FK1

2003 FK1 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.708 AU and a period of 0.60 yr.

Aten Observations: 27
Orbital Period · P
0.60 yr
v(q)
60.2 km/s
v(Q)
20.8 km/s
Diameter · ≈
0.09 km
TJ
7.95
Eccentricity · e
0.4857

Orbit and dynamics

The path is an ellipse reaching 0.364 AU from the Sun at perihelion and 1.051 AU at aphelion, a radial span of 0.687 AU.

Applying Kepler's third law to a = 0.708 AU gives an orbital period of 0.60 yr, or about 217 days.

The high eccentricity (0.486) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 23.35° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 60.2 km/s at perihelion and falls to 20.8 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 = 23 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.09 km.

Observation record and orbit quality

The current orbit solution is based on 27 observations and has a weighted RMS residual of 0.7091 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
0.7075 AU
Eccentricity
0.4857
Perihelion
0.364 AU
Aphelion
1.051133 AU
Inclination
23.35°
Orbital Period
— yr
Epoch
2452725.5
Mean Anomaly
160.22°

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
2062-Apr-11 01:38 0.203922 AU
30506313 km
16.72 km/s
2065-Apr-11 22:12 0.348956 AU
52203053 km
20.15 km/s
2066-Mar-24 21:56 0.416221 AU
62265833 km
27.25 km/s
2068-Apr-09 15:59 0.387638 AU
57989875 km
24.16 km/s
2069-Mar-20 03:43 0.153864 AU
23017780 km
23.16 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
23.0

Orbit Quality

RMS
0.7091
Condition
8
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.

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