SpaceAtlas Space Object Data
NASA JPL SBDB · 2014 RJ11

2014 RJ11

2014 RJ11 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.33 AU it takes 1.53 yr to circle the Sun.

Apollo Observations: 31
Orbital Period · P
1.53 yr
v(q)
35.9 km/s
v(Q)
18.6 km/s
Diameter · ≈
0.01 km
TJ
4.87
Eccentricity · e
0.3183

Orbit and dynamics

Between its closest point (0.906 AU) and its farthest (1.753 AU), the heliocentric distance changes by 0.847 AU over every revolution.

One full revolution takes 1.53 yr (560 days), computed from the semi-major axis of 1.33 AU.

An eccentricity of 0.318 makes the orbit moderately elongated.

Its inclination of 2.01° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 35.9 km/s at perihelion and falls to 18.6 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 = 27.35 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 31 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5441 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
1.33 AU
Eccentricity
0.3183
Perihelion
0.906 AU
Aphelion
1.753339 AU
Inclination
2.01°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
210.83°

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
2034-Aug-08 16:22 0.307547 AU
46008315 km
21.12 km/s
2044-Jan-16 04:27 0.222520 AU
33288472 km
17.97 km/s
2070-Jan-04 05:24 0.005809 AU
869070 km
11.09 km/s
2073-Jan-17 19:54 0.122171 AU
18276580 km
18.70 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
27.35

Orbit Quality

RMS
0.54413
Condition
7
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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