SpaceAtlas Space Object Data
NASA JPL SBDB · 2016 QS44

2016 QS44

2016 QS44 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.526 AU it takes 1.89 yr to circle the Sun.

Apollo Observations: 45
Orbital Period · P
1.89 yr
v(q)
46.7 km/s
v(Q)
12.4 km/s
Diameter · ≈
0.05 km
TJ
4.29
Eccentricity · e
0.5797

Orbit and dynamics

Between its closest point (0.642 AU) and its farthest (2.411 AU), the heliocentric distance changes by 1.769 AU over every revolution.

One full revolution takes 1.89 yr (689 days), computed from the semi-major axis of 1.526 AU.

The high eccentricity (0.58) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 6.69° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 46.7 km/s at perihelion and falls to 12.4 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 = 24.4 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.05 km.

Observation record and orbit quality

Astrometry from 45 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3062 arcseconds.

Condition code U = 8 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
1.526 AU
Eccentricity
0.5797
Perihelion
0.642 AU
Aphelion
2.410622 AU
Inclination
6.69°
Orbital Period
— yr
Epoch
2457632.5
Mean Anomaly
328.21°

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
2033-Aug-21 01:48 0.221627 AU
33154978 km
28.91 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
24.4

Orbit Quality

RMS
0.30616
Condition
8
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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