SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 FS2

2019 FS2

2019 FS2 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.989 AU and a period of 0.98 yr.

Aten Observations: 49
Orbital Period · P
0.98 yr
v(q)
36 km/s
v(Q)
24.9 km/s
Diameter · ≈
0.01 km
TJ
6.12
Eccentricity · e
0.1818

Orbit and dynamics

Between its closest point (0.81 AU) and its farthest (1.169 AU), the heliocentric distance changes by 0.359 AU over every revolution.

One full revolution takes 0.98 yr (359 days), computed from the semi-major axis of 0.989 AU.

An eccentricity of 0.182 makes the orbit moderately elongated.

Its inclination of 3.36° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 36 km/s at perihelion and falls to 24.9 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 = 27.3 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 49 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4937 arcseconds.

Condition code U = 5 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
0.9894 AU
Eccentricity
0.1818
Perihelion
0.81 AU
Aphelion
1.169273 AU
Inclination
3.36°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
17.42°

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
27.3

Orbit Quality

RMS
0.49373
Condition
5
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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