SpaceAtlas Space Object Data
NASA JPL SBDB · 2016 TQ56

2016 TQ56

2016 TQ56 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.578 AU it takes 1.98 yr to circle the Sun.

Apollo Observations: 69
Orbital Period · P
1.98 yr
v(q)
37.7 km/s
v(Q)
14.9 km/s
Diameter · ≈
0.06 km
TJ
4.28
Eccentricity · e
0.4329

Orbit and dynamics

The path is an ellipse reaching 0.895 AU from the Sun at perihelion and 2.261 AU at aphelion, a radial span of 1.366 AU.

Applying Kepler's third law to a = 1.578 AU gives an orbital period of 1.98 yr, or about 724 days.

The high eccentricity (0.433) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 6.7° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 37.7 km/s at perihelion and falls to 14.9 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 = 23.95 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.06 km.

Observation record and orbit quality

The current orbit solution is based on 69 observations and has a weighted RMS residual of 0.596 arcseconds.

Condition code U = 0 means the orbit is very well determined, leaving only a small uncertainty in the future ephemeris.

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
1.578 AU
Eccentricity
0.4329
Perihelion
0.895 AU
Aphelion
2.261116 AU
Inclination
6.7°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
335.76°

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
2028-Jun-03 08:15 0.235694 AU
35259378 km
16.47 km/s
2030-May-28 11:12 0.347470 AU
51980807 km
19.97 km/s
2032-May-21 21:33 0.462335 AU
69164333 km
23.42 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
23.95

Orbit Quality

RMS
0.59598
Condition
0
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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