SpaceAtlas Space Object Data
NASA JPL SBDB · 2016 NT22

2016 NT22

2016 NT22 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.246 AU it takes 1.39 yr to circle the Sun.

Apollo Observations: 81
Orbital Period · P
1.39 yr
v(q)
101.2 km/s
v(Q)
7 km/s
Diameter · ≈
0.45 km
TJ
4.64
Eccentricity · e
0.8703

Orbit and dynamics

The path is an ellipse reaching 0.162 AU from the Sun at perihelion and 2.33 AU at aphelion, a radial span of 2.168 AU.

Applying Kepler's third law to a = 1.246 AU gives an orbital period of 1.39 yr, or about 508 days.

The high eccentricity (0.87) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 17.8° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 101.2 km/s at perihelion and falls to 7 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 = 19.51 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.45 km.

Observation record and orbit quality

The current orbit solution is based on 81 observations and has a weighted RMS residual of 0.5325 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
1.246 AU
Eccentricity
0.8703
Perihelion
0.162 AU
Aphelion
2.330394 AU
Inclination
17.8°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
332.14°

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
2029-Jun-03 12:06 0.335573 AU
50200984 km
36.02 km/s
2030-Aug-09 14:42 0.040323 AU
6032200 km
32.40 km/s
2036-May-22 02:24 0.317887 AU
47555215 km
27.46 km/s
2037-Jul-27 20:22 0.320011 AU
47873002 km
41.22 km/s
2048-Aug-19 08:56 0.310288 AU
46418384 km
23.51 km/s
2054-Jun-06 10:40 0.364473 AU
54524427 km
37.69 km/s
2055-Aug-11 23:17 0.019588 AU
2930317 km
30.96 km/s
2061-May-25 01:33 0.299466 AU
44799407 km
29.36 km/s
2062-Jul-31 09:59 0.254570 AU
38083089 km
39.08 km/s
2068-May-16 15:07 0.442562 AU
66206269 km
22.20 km/s
2073-Aug-20 07:00 0.416241 AU
62268835 km
21.77 km/s
2079-Jun-12 21:41 0.446847 AU
66847370 km
41.67 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
19.51

Orbit Quality

RMS
0.53248
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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