SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 TQ3

2017 TQ3

2017 TQ3 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.851 AU it takes 4.81 yr to circle the Sun.

Apollo Observations: 65
Orbital Period · P
4.81 yr
v(q)
43.9 km/s
v(Q)
7.1 km/s
Diameter · ≈
0.29 km
TJ
2.81
Eccentricity · e
0.7217

Orbit and dynamics

The path is an ellipse reaching 0.793 AU from the Sun at perihelion and 4.909 AU at aphelion, a radial span of 4.116 AU.

Applying Kepler's third law to a = 2.851 AU gives an orbital period of 4.81 yr, or about 1,758 days.

The high eccentricity (0.722) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 16.46° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 43.9 km/s at perihelion and falls to 7.1 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 = 20.44 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.29 km.

Observation record and orbit quality

The current orbit solution is based on 65 observations and has a weighted RMS residual of 0.5383 arcseconds.

Condition code U = 5 indicates a moderately constrained orbit; predictions decades ahead still carry noticeable uncertainty.

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
2.851 AU
Eccentricity
0.7217
Perihelion
0.793 AU
Aphelion
4.908567 AU
Inclination
16.46°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
275.66°

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
2041-Nov-30 06:55 0.197406 AU
29531478 km
17.37 km/s
2065-Nov-07 12:33 0.182655 AU
27324768 km
17.42 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
20.44

Orbit Quality

RMS
0.53835
Condition
5
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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