SpaceAtlas Space Object Data
NASA JPL SBDB · 2016 NW90

2016 NW90

2016 NW90 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.141 AU it takes 3.13 yr to circle the Sun.

Apollo Observations: 52
Orbital Period · P
3.13 yr
v(q)
36.6 km/s
v(Q)
11.3 km/s
Diameter · ≈
0 km
TJ
3.5
Eccentricity · e
0.5266

Orbit and dynamics

The path is an ellipse reaching 1.013 AU from the Sun at perihelion and 3.268 AU at aphelion, a radial span of 2.255 AU.

Applying Kepler's third law to a = 2.141 AU gives an orbital period of 3.13 yr, or about 1,144 days.

The high eccentricity (0.527) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 10.65° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 36.6 km/s at perihelion and falls to 11.3 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 29.98 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0 km.

Observation record and orbit quality

The current orbit solution is based on 52 observations and has a weighted RMS residual of 0.3 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
2.141 AU
Eccentricity
0.5266
Perihelion
1.013 AU
Aphelion
3.268451 AU
Inclination
10.65°
Orbital Period
— yr
Epoch
2460600.5
Mean Anomaly
226.45°

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
29.98

Orbit Quality

RMS
0.3
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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