SpaceAtlas Space Object Data
NASA JPL SBDB · 2025 FC1

2025 FC1

2025 FC1 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.959 AU and a period of 0.94 yr.

Aten Observations: 28
Orbital Period · P
0.94 yr
v(q)
56 km/s
v(Q)
16.5 km/s
Diameter · ≈
0.01 km
TJ
6.11
Eccentricity · e
0.5448

Orbit and dynamics

Between its closest point (0.437 AU) and its farthest (1.482 AU), the heliocentric distance changes by 1.045 AU over every revolution.

One full revolution takes 0.94 yr (343 days), computed from the semi-major axis of 0.959 AU.

The high eccentricity (0.545) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 19.08° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 56 km/s at perihelion and falls to 16.5 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 = 27.68 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 28 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4973 arcseconds.

Condition code U = 7 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
0.9594 AU
Eccentricity
0.5448
Perihelion
0.437 AU
Aphelion
1.482081 AU
Inclination
19.08°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
170.61°

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
2041-Mar-17 17:53 0.013468 AU
2014759 km
15.47 km/s
2056-Mar-22 01:57 0.002109 AU
315436 km
20.70 km/s
2072-Mar-18 16:03 0.001633 AU
244250 km
17.40 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
27.68

Orbit Quality

RMS
0.49726
Condition
7
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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