SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 NN7

2019 NN7

2019 NN7 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.818 AU it takes 2.45 yr to circle the Sun.

Apollo Observations: 8
Orbital Period · P
2.45 yr
v(q)
41 km/s
v(Q)
11.9 km/s
Diameter · ≈
0.5 km
TJ
3.8
Eccentricity · e
0.5496

Orbit and dynamics

The path is an ellipse reaching 0.819 AU from the Sun at perihelion and 2.817 AU at aphelion, a radial span of 1.998 AU.

Applying Kepler's third law to a = 1.818 AU gives an orbital period of 2.45 yr, or about 895 days.

The high eccentricity (0.55) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 18.75° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 41 km/s at perihelion and falls to 11.9 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 = 19.27 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.5 km.

Observation record and orbit quality

The current orbit solution is based on 8 observations and has a weighted RMS residual of 0.448 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
1.818 AU
Eccentricity
0.5496
Perihelion
0.819 AU
Aphelion
2.817173 AU
Inclination
18.75°
Orbital Period
— yr
Epoch
2458680.5
Mean Anomaly
339.29°

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
19.27

Orbit Quality

RMS
0.44802
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.

Keep exploring

Explore asteroids, comets and near-Earth objects with JPL orbital data.