SpaceAtlas Space Object Data
NASA JPL SBDB · 2003 FF5

2003 FF5

2003 FF5 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.37 AU it takes 1.60 yr to circle the Sun.

Apollo Observations: 158
Orbital Period · P
1.60 yr
v(q)
34.8 km/s
v(Q)
18.6 km/s
Diameter · ≈
0.08 km
TJ
4.77
Eccentricity · e
0.304

Orbit and dynamics

The path is an ellipse reaching 0.953 AU from the Sun at perihelion and 1.786 AU at aphelion, a radial span of 0.833 AU.

Applying Kepler's third law to a = 1.37 AU gives an orbital period of 1.60 yr, or about 586 days.

An eccentricity of 0.304 makes the orbit moderately elongated.

The orbital plane is tilted 6.34° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 34.8 km/s at perihelion and falls to 18.6 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 = 23.3 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.08 km.

Observation record and orbit quality

The current orbit solution is based on 158 observations and has a weighted RMS residual of 0.4521 arcseconds.

Condition code U = 0 means the orbit is very well determined, leaving only a small uncertainty in the future ephemeris.

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
1.37 AU
Eccentricity
0.304
Perihelion
0.953 AU
Aphelion
1.78648 AU
Inclination
6.34°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
138.84°

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
2027-Jul-01 17:22 0.114421 AU
17117155 km
5.83 km/s
2035-Mar-14 15:51 0.360204 AU
53885752 km
3.94 km/s
2035-Jul-24 05:40 0.126564 AU
18933735 km
8.53 km/s
2043-Feb-20 14:31 0.455841 AU
68192855 km
6.15 km/s
2043-Aug-03 15:55 0.226175 AU
33835260 km
12.63 km/s
2051-Aug-12 01:44 0.368466 AU
55121684 km
17.13 km/s
2064-Mar-20 16:56 0.374138 AU
55970281 km
18.07 km/s
2072-Mar-28 13:33 0.220906 AU
33047040 km
13.65 km/s
2072-Sep-12 14:29 0.458029 AU
68520127 km
6.80 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
23.3

Orbit Quality

RMS
0.45211
Condition
0
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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