SpaceAtlas Space Object Data
NASA JPL SBDB · 2025 RB

2025 RB

2025 RB is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.95 AU and a period of 0.93 yr.

Aten Observations: 20
Orbital Period · P
0.93 yr
v(q)
35.5 km/s
v(Q)
26.4 km/s
Diameter · ≈
0.02 km
TJ
6.21
Eccentricity · e
0.1469

Orbit and dynamics

Between its closest point (0.81 AU) and its farthest (1.09 AU), the heliocentric distance changes by 0.28 AU over every revolution.

One full revolution takes 0.93 yr (338 days), computed from the semi-major axis of 0.95 AU.

An eccentricity of 0.147 makes the orbit moderately elongated.

A steep inclination of 29.42° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 35.5 km/s at perihelion and falls to 26.4 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 = 26.57 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

Astrometry from 20 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4166 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
0.9501 AU
Eccentricity
0.1469
Perihelion
0.81 AU
Aphelion
1.08967 AU
Inclination
29.42°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
166.57°

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
2050-Sep-02 18:29 0.043782 AU
6549726 km
14.76 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
26.57

Orbit Quality

RMS
0.4166
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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