SpaceAtlas Space Object Data
NASA JPL SBDB · 2025 FR13

2025 FR13

2025 FR13 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.85 AU and a period of 0.78 yr.

Aten Observations: 44
Orbital Period · P
0.78 yr
v(q)
50.5 km/s
v(Q)
20.7 km/s
Diameter · ≈
0.05 km
TJ
6.8
Eccentricity · e
0.4194

Orbit and dynamics

Between its closest point (0.493 AU) and its farthest (1.206 AU), the heliocentric distance changes by 0.713 AU over every revolution.

One full revolution takes 0.78 yr (286 days), computed from the semi-major axis of 0.85 AU.

The high eccentricity (0.419) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 23.86° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 50.5 km/s at perihelion and falls to 20.7 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 = 24.19 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.05 km.

Observation record and orbit quality

Astrometry from 44 individual observations underpins this orbit; the fit leaves an RMS residual of 0.2552 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
0.8498 AU
Eccentricity
0.4194
Perihelion
0.493 AU
Aphelion
1.206206 AU
Inclination
23.86°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
93.64°

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
2036-Mar-26 00:58 0.163927 AU
24523085 km
20.98 km/s
2043-Mar-30 22:59 0.069404 AU
10382758 km
14.54 km/s
2054-Mar-29 08:30 0.039324 AU
5882753 km
18.33 km/s
2061-Mar-27 11:12 0.147166 AU
22015664 km
13.49 km/s
2072-Mar-30 08:50 0.008748 AU
1308683 km
16.38 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
24.19

Orbit Quality

RMS
0.25525
Condition
6
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.

Keep exploring

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