SpaceAtlas Space Object Data
NASA JPL SBDB · 474163

474163

474163 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.085 AU it takes 1.13 yr to circle the Sun.

Apollo Observations: 351
Orbital Period · P
1.13 yr
v(q)
30.5 km/s
v(Q)
26.8 km/s
Diameter · ≈
0.24 km
TJ
5.68
Eccentricity · e
0.0645

Orbit and dynamics

The path is an ellipse reaching 1.015 AU from the Sun at perihelion and 1.155 AU at aphelion, a radial span of 0.14 AU.

Applying Kepler's third law to a = 1.085 AU gives an orbital period of 1.13 yr, or about 413 days.

With e = 0.065, the orbit is close to circular.

The orbital plane is tilted 13.37° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 30.5 km/s at perihelion and falls to 26.8 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 20.81 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.24 km.

Observation record and orbit quality

The current orbit solution is based on 351 observations and has a weighted RMS residual of 0.5546 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
1.085 AU
Eccentricity
0.0645
Perihelion
1.015 AU
Aphelion
1.154983 AU
Inclination
13.37°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
17.75°

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

No close approaches to Earth are currently on record for this object.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
20.81

Orbit Quality

RMS
0.55465
Condition
0
Orbit ID
—
Data source: NASA JPL Small-Body Database . 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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