SpaceAtlas Space Object Data
NASA JPL SBDB · 2005 YR3

2005 YR3

2005 YR3 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.82 AU and a period of 0.74 yr.

Aten Observations: 121
Orbital Period · P
0.74 yr
v(q)
43.5 km/s
v(Q)
24.9 km/s
Diameter · ≈
0.06 km
TJ
7.11
Eccentricity · e
0.2729

Orbit and dynamics

Between its closest point (0.596 AU) and its farthest (1.044 AU), the heliocentric distance changes by 0.448 AU over every revolution.

One full revolution takes 0.74 yr (271 days), computed from the semi-major axis of 0.82 AU.

An eccentricity of 0.273 makes the orbit moderately elongated.

Its inclination of 3.28° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 43.5 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 = 23.76 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.06 km.

Observation record and orbit quality

Astrometry from 121 individual observations underpins this orbit; the fit leaves an RMS residual of 0.6272 arcseconds.

Condition code U = 0 means the orbit is very well determined, leaving only a small uncertainty in the future ephemeris.

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
0.82 AU
Eccentricity
0.2729
Perihelion
0.596 AU
Aphelion
1.043778 AU
Inclination
3.28°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
358.83°

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
2029-Jan-07 16:52 0.067801 AU
10142952 km
5.57 km/s
2032-Feb-16 22:27 0.064036 AU
9579583 km
7.67 km/s
2045-Dec-10 01:49 0.147224 AU
22024466 km
11.49 km/s
2048-Dec-23 10:18 0.046392 AU
6940154 km
5.67 km/s
2052-Feb-16 14:23 0.064150 AU
9596644 km
7.66 km/s
2066-Jan-05 00:44 0.060819 AU
9098454 km
5.50 km/s
2069-Feb-14 05:07 0.189370 AU
28329395 km
12.43 km/s
2076-Dec-09 18:44 0.147657 AU
22089166 km
11.40 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
23.76

Orbit Quality

RMS
0.62722
Condition
0
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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