SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 SQ16

2017 SQ16

2017 SQ16 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.049 AU it takes 1.07 yr to circle the Sun.

Apollo Observations: 25
Orbital Period · P
1.07 yr
v(q)
30.1 km/s
v(Q)
28.1 km/s
Diameter · ≈
0.04 km
TJ
5.8
Eccentricity · e
0.0333

Orbit and dynamics

The path is an ellipse reaching 1.014 AU from the Sun at perihelion and 1.084 AU at aphelion, a radial span of 0.07 AU.

Applying Kepler's third law to a = 1.049 AU gives an orbital period of 1.07 yr, or about 392 days.

With e = 0.033, the orbit is close to circular.

A steep inclination of 21.1° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 30.1 km/s at perihelion and falls to 28.1 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 25 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.

Observation record and orbit quality

The current orbit solution is based on 25 observations and has a weighted RMS residual of 0.4377 arcseconds.

Condition code U = 7 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
1.049 AU
Eccentricity
0.0333
Perihelion
1.014 AU
Aphelion
1.083932 AU
Inclination
21.1°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
303.36°

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
2031-Mar-24 08:06 0.312815 AU
46796396 km
16.73 km/s
2031-Sep-22 14:44 0.104682 AU
15660163 km
12.32 km/s
2032-Mar-19 04:24 0.054623 AU
8171486 km
10.90 km/s
2032-Sep-21 03:09 0.121633 AU
18195985 km
12.32 km/s
2033-Mar-22 04:41 0.188542 AU
28205509 km
15.86 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
25.0

Orbit Quality

RMS
0.43775
Condition
7
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.

Keep exploring

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