SpaceAtlas Space Object Data
NASA JPL SBDB · 2015 RO83

2015 RO83

2015 RO83 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.507 AU it takes 1.85 yr to circle the Sun.

Apollo Observations: 25
Orbital Period · P
1.85 yr
v(q)
34.3 km/s
v(Q)
17.2 km/s
Diameter · ≈
0.04 km
TJ
4.46
Eccentricity · e
0.3322

Orbit and dynamics

The path is an ellipse reaching 1.006 AU from the Sun at perihelion and 2.008 AU at aphelion, a radial span of 1.002 AU.

Applying Kepler's third law to a = 1.507 AU gives an orbital period of 1.85 yr, or about 676 days.

An eccentricity of 0.332 makes the orbit moderately elongated.

The orbital plane is tilted 5.84° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 34.3 km/s at perihelion and falls to 17.2 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 25 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.

Observation record and orbit quality

The current orbit solution is based on 25 observations and has a weighted RMS residual of 0.2756 arcseconds.

Condition code U = 7 signals a poorly constrained orbit, so its future path should be treated as provisional.

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
1.507 AU
Eccentricity
0.3322
Perihelion
1.006 AU
Aphelion
2.007625 AU
Inclination
5.84°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
300.88°

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

No close approaches to Earth are currently on record for this object.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
25.0

Orbit Quality

RMS
0.27555
Condition
7
Orbit ID
—
Data source: NASA JPL Small-Body Database . 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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