SpaceAtlas Space Object Data
NASA JPL SBDB · 2016 YO3

2016 YO3

2016 YO3 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.266 AU it takes 1.42 yr to circle the Sun.

Apollo Observations: 134
Orbital Period · P
1.42 yr
v(q)
34.8 km/s
v(Q)
20.1 km/s
Diameter · ≈
0.34 km
TJ
4.99
Eccentricity · e
0.2678

Orbit and dynamics

The path is an ellipse reaching 0.927 AU from the Sun at perihelion and 1.605 AU at aphelion, a radial span of 0.678 AU.

Applying Kepler's third law to a = 1.266 AU gives an orbital period of 1.42 yr, or about 520 days.

An eccentricity of 0.268 makes the orbit moderately elongated.

A steep inclination of 22.1° 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 20.1 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 = 20.08 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.34 km.

Observation record and orbit quality

The current orbit solution is based on 134 observations and has a weighted RMS residual of 0.433 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
1.266 AU
Eccentricity
0.2678
Perihelion
0.927 AU
Aphelion
1.605035 AU
Inclination
22.1°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
65.23°

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-Jun-21 14:21 0.168951 AU
25274747 km
13.48 km/s
2040-May-26 14:18 0.332457 AU
49734911 km
15.09 km/s
2047-Aug-11 16:23 0.334344 AU
50017127 km
17.93 km/s
2050-Apr-28 01:53 0.496571 AU
74285963 km
18.04 km/s
2057-Feb-13 16:40 0.488382 AU
73060874 km
11.42 km/s
2057-Jul-24 17:21 0.158019 AU
23639320 km
14.63 km/s
2067-Mar-05 08:53 0.457694 AU
68469991 km
9.20 km/s
2067-Jul-04 18:16 0.093578 AU
13999007 km
13.30 km/s
2077-Jun-08 12:55 0.253648 AU
37945144 km
14.18 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
20.08

Orbit Quality

RMS
0.43303
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.

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