SpaceAtlas Space Object Data
NASA JPL SBDB · 2011 OX17

2011 OX17

2011 OX17 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.202 AU it takes 3.27 yr to circle the Sun.

Apollo Observations: 43
Orbital Period · P
3.27 yr
v(q)
53.2 km/s
v(Q)
7.6 km/s
Diameter · ≈
0.3 km
TJ
3.22
Eccentricity · e
0.7513

Orbit and dynamics

Between its closest point (0.548 AU) and its farthest (3.856 AU), the heliocentric distance changes by 3.308 AU over every revolution.

One full revolution takes 3.27 yr (1,193 days), computed from the semi-major axis of 2.202 AU.

The high eccentricity (0.751) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 6.85° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 53.2 km/s at perihelion and falls to 7.6 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 = 20.4 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.3 km.

Observation record and orbit quality

Astrometry from 43 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4194 arcseconds.

Condition code U = 1 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
2.202 AU
Eccentricity
0.7513
Perihelion
0.548 AU
Aphelion
3.856363 AU
Inclination
6.85°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
210.2°

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
2034-May-19 00:25 0.415383 AU
62140393 km
19.85 km/s
2044-Jan-21 12:22 0.168884 AU
25264757 km
18.70 km/s
2047-Jul-29 17:52 0.237966 AU
35599132 km
29.34 km/s
2057-Apr-11 23:20 0.453512 AU
67844486 km
23.66 km/s
2067-Jan-09 12:50 0.098931 AU
14799814 km
24.10 km/s
2070-Jul-21 15:31 0.108489 AU
16229792 km
24.72 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
20.4

Orbit Quality

RMS
0.41936
Condition
1
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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