SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 YK5

2017 YK5

2017 YK5 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.527 AU it takes 4.02 yr to circle the Sun.

Apollo Observations: 133
Orbital Period · P
4.02 yr
v(q)
40.2 km/s
v(Q)
8.7 km/s
Diameter · ≈
0.06 km
TJ
3.13
Eccentricity · e
0.6431

Orbit and dynamics

Between its closest point (0.902 AU) and its farthest (4.152 AU), the heliocentric distance changes by 3.25 AU over every revolution.

One full revolution takes 4.02 yr (1,467 days), computed from the semi-major axis of 2.527 AU.

The high eccentricity (0.643) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

Its inclination of 0.93° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 40.2 km/s at perihelion and falls to 8.7 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 = 24.04 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.06 km.

Observation record and orbit quality

Astrometry from 133 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4713 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
2.527 AU
Eccentricity
0.6431
Perihelion
0.902 AU
Aphelion
4.152114 AU
Inclination
0.93°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
46.57°

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-Jan-10 05:57 0.254895 AU
38131753 km
19.83 km/s
2034-Jan-16 23:42 0.384146 AU
57467449 km
23.59 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
24.04

Orbit Quality

RMS
0.47135
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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