SpaceAtlas Space Object Data
NASA JPL SBDB · 2016 CO247

2016 CO247

2016 CO247 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.419 AU it takes 1.69 yr to circle the Sun.

Apollo Observations: 235
Orbital Period · P
1.69 yr
v(q)
44.1 km/s
v(Q)
14.2 km/s
Diameter · ≈
0.27 km
TJ
4.52
Eccentricity · e
0.5132

Orbit and dynamics

The path is an ellipse reaching 0.691 AU from the Sun at perihelion and 2.147 AU at aphelion, a radial span of 1.456 AU.

Applying Kepler's third law to a = 1.419 AU gives an orbital period of 1.69 yr, or about 617 days.

The high eccentricity (0.513) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 18.36° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 44.1 km/s at perihelion and falls to 14.2 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 = 20.61 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.27 km.

Observation record and orbit quality

The current orbit solution is based on 235 observations and has a weighted RMS residual of 0.3205 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
1.419 AU
Eccentricity
0.5132
Perihelion
0.691 AU
Aphelion
2.147231 AU
Inclination
18.36°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
104.85°

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
2032-Jul-21 16:28 0.087523 AU
13093255 km
15.49 km/s
2043-Jan-03 10:28 0.109123 AU
16324580 km
15.12 km/s
2054-Jul-19 14:00 0.041953 AU
6276021 km
16.64 km/s
2065-Jan-02 11:36 0.118065 AU
17662252 km
14.91 km/s
2076-Jul-21 04:04 0.078124 AU
11687198 km
15.74 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
20.61

Orbit Quality

RMS
0.32048
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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