SpaceAtlas Space Object Data
NASA JPL SBDB · 875461

875461

875461 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.93 AU and a period of 0.90 yr.

Aten Observations: 234
Orbital Period · P
0.90 yr
v(q)
37.7 km/s
v(Q)
25.2 km/s
Diameter · ≈
0.3 km
TJ
6.37
Eccentricity · e
0.1988

Orbit and dynamics

Between its closest point (0.746 AU) and its farthest (1.115 AU), the heliocentric distance changes by 0.369 AU over every revolution.

One full revolution takes 0.90 yr (328 days), computed from the semi-major axis of 0.93 AU.

An eccentricity of 0.199 makes the orbit moderately elongated.

The orbital plane is tilted 19.47° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 37.7 km/s at perihelion and falls to 25.2 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 = 20.34 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.3 km.

Observation record and orbit quality

Astrometry from 234 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4572 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
0.9305 AU
Eccentricity
0.1988
Perihelion
0.746 AU
Aphelion
1.115483 AU
Inclination
19.47°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
223.33°

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-Dec-25 00:26 0.120915 AU
18088593 km
10.64 km/s
2039-Jan-05 00:35 0.164810 AU
24655161 km
11.61 km/s
2055-Dec-19 18:34 0.134375 AU
20102180 km
10.58 km/s
2065-Jan-02 03:49 0.143920 AU
21530088 km
11.23 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
20.34

Orbit Quality

RMS
0.45724
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.

Keep exploring

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