SpaceAtlas Space Object Data
NASA JPL SBDB · 2014 YY8

2014 YY8

2014 YY8 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.13 AU it takes 3.11 yr to circle the Sun.

Apollo Observations: 96
Orbital Period · P
3.11 yr
v(q)
40.5 km/s
v(Q)
10.3 km/s
Diameter · ≈
0.53 km
TJ
3.41
Eccentricity · e
0.5941

Orbit and dynamics

Between its closest point (0.864 AU) and its farthest (3.395 AU), the heliocentric distance changes by 2.531 AU over every revolution.

One full revolution takes 3.11 yr (1,135 days), computed from the semi-major axis of 2.13 AU.

The high eccentricity (0.594) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 20.01° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 40.5 km/s at perihelion and falls to 10.3 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 = 19.12 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.53 km.

Observation record and orbit quality

Astrometry from 96 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4817 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
2.13 AU
Eccentricity
0.5941
Perihelion
0.864 AU
Aphelion
3.395433 AU
Inclination
20.01°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
228.82°

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
2043-Jan-27 16:05 0.324938 AU
48609988 km
13.61 km/s
2046-Apr-23 09:26 0.224270 AU
33550277 km
21.67 km/s
2074-Feb-26 05:22 0.257418 AU
38509201 km
14.36 km/s
2077-Apr-29 03:07 0.325200 AU
48649181 km
24.17 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
19.12

Orbit Quality

RMS
0.48167
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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