SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 FW2

2017 FW2

2017 FW2 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.911 AU and a period of 0.87 yr.

Aten Observations: 58
Orbital Period · P
0.87 yr
v(q)
48.2 km/s
v(Q)
20.2 km/s
Diameter · ≈
0.03 km
TJ
6.45
Eccentricity · e
0.4095

Orbit and dynamics

The path is an ellipse reaching 0.538 AU from the Sun at perihelion and 1.284 AU at aphelion, a radial span of 0.746 AU.

Applying Kepler's third law to a = 0.911 AU gives an orbital period of 0.87 yr, or about 318 days.

The high eccentricity (0.409) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 16.27° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 48.2 km/s at perihelion and falls to 20.2 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 = 25.6 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 58 observations and has a weighted RMS residual of 0.5073 arcseconds.

Condition code U = 6 indicates a moderately constrained orbit; predictions decades ahead still carry noticeable uncertainty.

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
0.911 AU
Eccentricity
0.4095
Perihelion
0.538 AU
Aphelion
1.284055 AU
Inclination
16.27°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
302.07°

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
25.6

Orbit Quality

RMS
0.50732
Condition
6
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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