SpaceAtlas Space Object Data
NASA JPL SBDB · 497117

497117

497117 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.26 AU it takes 1.41 yr to circle the Sun.

Apollo Observations: 500
Orbital Period · P
1.41 yr
v(q)
34.8 km/s
v(Q)
20.2 km/s
Diameter · ≈
0.76 km
TJ
5
Eccentricity · e
0.2639

Orbit and dynamics

Between its closest point (0.928 AU) and its farthest (1.593 AU), the heliocentric distance changes by 0.665 AU over every revolution.

One full revolution takes 1.41 yr (517 days), computed from the semi-major axis of 1.26 AU.

An eccentricity of 0.264 makes the orbit moderately elongated.

A steep inclination of 23.25° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 34.8 km/s at perihelion and falls to 20.2 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 = 18.34 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.76 km.

Observation record and orbit quality

Astrometry from 500 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5212 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
1.26 AU
Eccentricity
0.2639
Perihelion
0.928 AU
Aphelion
1.592514 AU
Inclination
23.25°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
354.47°

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
18.34

Orbit Quality

RMS
0.52121
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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