SpaceAtlas Space Object Data
NASA JPL SBDB · 2015 JQ

2015 JQ

2015 JQ is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.54 AU once every 1.91 yr.

Amor Observations: 82
Orbital Period · P
1.91 yr
v(q)
31.4 km/s
v(Q)
18.3 km/s
Diameter · ≈
0.19 km
TJ
4.27
Eccentricity · e
0.2625

Orbit and dynamics

The path is an ellipse reaching 1.135 AU from the Sun at perihelion and 1.944 AU at aphelion, a radial span of 0.809 AU.

Applying Kepler's third law to a = 1.54 AU gives an orbital period of 1.91 yr, or about 698 days.

An eccentricity of 0.263 makes the orbit moderately elongated.

A steep inclination of 31.75° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 31.4 km/s at perihelion and falls to 18.3 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 = 21.35 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.19 km.

Observation record and orbit quality

The current orbit solution is based on 82 observations and has a weighted RMS residual of 0.3955 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
1.54 AU
Eccentricity
0.2625
Perihelion
1.135 AU
Aphelion
1.94425 AU
Inclination
31.75°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
295.38°

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
21.35

Orbit Quality

RMS
0.39554
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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