SpaceAtlas Space Object Data
NASA JPL SBDB · 475534

475534

475534 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.947 AU and a period of 0.92 yr.

Aten Observations: 224
Orbital Period · P
0.92 yr
v(q)
59.4 km/s
v(Q)
15.8 km/s
Diameter · ≈
0.2 km
TJ
6.19
Eccentricity · e
0.5804

Orbit and dynamics

Between its closest point (0.397 AU) and its farthest (1.496 AU), the heliocentric distance changes by 1.099 AU over every revolution.

One full revolution takes 0.92 yr (337 days), computed from the semi-major axis of 0.947 AU.

The high eccentricity (0.58) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 5.5° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 59.4 km/s at perihelion and falls to 15.8 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 = 21.25 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.2 km.

Observation record and orbit quality

Astrometry from 224 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3999 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
0.9469 AU
Eccentricity
0.5804
Perihelion
0.397 AU
Aphelion
1.496481 AU
Inclination
5.5°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
33.88°

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
2030-Oct-24 12:44 0.158538 AU
23716887 km
22.60 km/s
2042-Oct-27 12:51 0.078425 AU
11732276 km
20.10 km/s
2050-Jul-16 17:03 0.112547 AU
16836756 km
15.85 km/s
2054-Oct-31 07:07 0.062848 AU
9401989 km
16.02 km/s
2062-Jul-21 12:25 0.131891 AU
19730667 km
20.59 km/s
2075-Jul-16 17:16 0.182133 AU
27246665 km
13.48 km/s
2079-Oct-29 15:39 0.027502 AU
4114216 km
18.48 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
21.25

Orbit Quality

RMS
0.39987
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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