SpaceAtlas Space Object Data
NASA JPL SBDB · 2015 RB36

2015 RB36

2015 RB36 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 2.175 AU once every 3.21 yr.

Amor Observations: 22
Orbital Period · P
3.21 yr
v(q)
34 km/s
v(Q)
12 km/s
Diameter · ≈
0.03 km
TJ
3.52
Eccentricity · e
0.4781

Orbit and dynamics

Between its closest point (1.135 AU) and its farthest (3.215 AU), the heliocentric distance changes by 2.08 AU over every revolution.

One full revolution takes 3.21 yr (1,172 days), computed from the semi-major axis of 2.175 AU.

The high eccentricity (0.478) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

Its inclination of 4.99° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 34 km/s at perihelion and falls to 12 km/s at aphelion.

Its perihelion lies just outside Earth's orbit, which is why it is classed as Earth-approaching rather than Earth-crossing.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 25.1 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

Astrometry from 22 individual observations underpins this orbit; the fit leaves an RMS residual of 0.473 arcseconds.

Condition code U = 9 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
2.175 AU
Eccentricity
0.4781
Perihelion
1.135 AU
Aphelion
3.214867 AU
Inclination
4.99°
Orbital Period
— yr
Epoch
2457276.5
Mean Anomaly
8.07°

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
25.1

Orbit Quality

RMS
0.473
Condition
9
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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