SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 QC17

2017 QC17

2017 QC17 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.864 AU and a period of 0.80 yr.

Aten Observations: 49
Orbital Period · P
0.80 yr
v(q)
57.5 km/s
v(Q)
17.9 km/s
Diameter · ≈
0.12 km
TJ
6.71
Eccentricity · e
0.5261

Orbit and dynamics

Between its closest point (0.41 AU) and its farthest (1.319 AU), the heliocentric distance changes by 0.909 AU over every revolution.

One full revolution takes 0.80 yr (293 days), computed from the semi-major axis of 0.864 AU.

The high eccentricity (0.526) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 5.34° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 57.5 km/s at perihelion and falls to 17.9 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 = 22.41 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.12 km.

Observation record and orbit quality

Astrometry from 49 individual observations underpins this orbit; the fit leaves an RMS residual of 0.6356 arcseconds.

Condition code U = 1 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
0.8641 AU
Eccentricity
0.5261
Perihelion
0.41 AU
Aphelion
1.318703 AU
Inclination
5.34°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
173.24°

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
2037-Jul-11 20:48 0.169394 AU
25341044 km
11.30 km/s
2041-Jul-06 14:53 0.098656 AU
14758772 km
12.45 km/s
2042-Oct-01 23:04 0.132502 AU
19821972 km
17.76 km/s
2045-Jul-05 14:21 0.034589 AU
5174508 km
14.17 km/s
2046-Oct-03 14:04 0.095266 AU
14251521 km
15.69 km/s
2049-Jul-06 03:16 0.031377 AU
4693900 km
15.72 km/s
2050-Oct-04 08:28 0.094823 AU
14185254 km
13.98 km/s
2053-Jul-07 20:40 0.098789 AU
14778680 km
17.87 km/s
2054-Oct-02 21:47 0.135065 AU
20205421 km
12.12 km/s
2057-Jul-10 09:22 0.175578 AU
26266141 km
20.30 km/s
2058-Sep-27 04:46 0.190310 AU
28469948 km
11.11 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
22.41

Orbit Quality

RMS
0.63557
Condition
1
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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