SpaceAtlas Space Object Data
NASA JPL SBDB · 2004 FA5

2004 FA5

2004 FA5 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.306 AU it takes 1.49 yr to circle the Sun.

Apollo Observations: 24
Orbital Period · P
1.49 yr
v(q)
35.5 km/s
v(Q)
19.1 km/s
Diameter · ≈
0.04 km
TJ
4.91
Eccentricity · e
0.2993

Orbit and dynamics

Between its closest point (0.915 AU) and its farthest (1.697 AU), the heliocentric distance changes by 0.782 AU over every revolution.

One full revolution takes 1.49 yr (545 days), computed from the semi-major axis of 1.306 AU.

An eccentricity of 0.299 makes the orbit moderately elongated.

The orbital plane is tilted 15.01° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 35.5 km/s at perihelion and falls to 19.1 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 = 24.5 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.

Observation record and orbit quality

Astrometry from 24 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4087 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
1.306 AU
Eccentricity
0.2993
Perihelion
0.915 AU
Aphelion
1.696886 AU
Inclination
15.01°
Orbital Period
— yr
Epoch
2453087.5
Mean Anomaly
329.71°

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
24.5

Orbit Quality

RMS
0.40874
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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