SpaceAtlas Space Object Data
NASA JPL SBDB · 2025 RY2

2025 RY2

2025 RY2 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.909 AU and a period of 0.87 yr.

Aten Observations: 19
Orbital Period · P
0.87 yr
v(q)
35.6 km/s
v(Q)
27.4 km/s
Diameter · ≈
0.02 km
TJ
6.55
Eccentricity · e
0.1299

Orbit and dynamics

The path is an ellipse reaching 0.791 AU from the Sun at perihelion and 1.027 AU at aphelion, a radial span of 0.236 AU.

Applying Kepler's third law to a = 0.909 AU gives an orbital period of 0.87 yr, or about 317 days.

An eccentricity of 0.13 makes the orbit moderately elongated.

The orbital plane is tilted 7.27° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 35.6 km/s at perihelion and falls to 27.4 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 = 26.36 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

The current orbit solution is based on 19 observations and has a weighted RMS residual of 0.4566 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
0.909 AU
Eccentricity
0.1299
Perihelion
0.791 AU
Aphelion
1.027079 AU
Inclination
7.27°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
137.81°

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
2051-Oct-07 10:11 0.109143 AU
16327590 km
7.89 km/s
2057-Aug-20 09:57 0.044824 AU
6705564 km
5.20 km/s
2070-Sep-13 08:00 0.021143 AU
3162924 km
4.23 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
26.36

Orbit Quality

RMS
0.45663
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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