SpaceAtlas Space Object Data
NASA JPL SBDB · 2016 NU22

2016 NU22

2016 NU22 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.915 AU once every 2.65 yr.

Amor Observations: 56
Orbital Period · P
2.65 yr
v(q)
31.2 km/s
v(Q)
14.8 km/s
Diameter · ≈
0.25 km
TJ
3.75
Eccentricity · e
0.3553

Orbit and dynamics

Between its closest point (1.234 AU) and its farthest (2.595 AU), the heliocentric distance changes by 1.361 AU over every revolution.

One full revolution takes 2.65 yr (968 days), computed from the semi-major axis of 1.915 AU.

An eccentricity of 0.355 makes the orbit moderately elongated.

A steep inclination of 24.21° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 31.2 km/s at perihelion and falls to 14.8 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 = 20.75 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.25 km.

Observation record and orbit quality

Astrometry from 56 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4039 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
1.915 AU
Eccentricity
0.3553
Perihelion
1.234 AU
Aphelion
2.5954 AU
Inclination
24.21°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
294.55°

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
2061-Mar-03 18:24 0.456389 AU
68274795 km
12.01 km/s
2069-Mar-14 10:30 0.482914 AU
72242873 km
12.70 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
20.75

Orbit Quality

RMS
0.40387
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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