SpaceAtlas Space Object Data
NASA JPL SBDB · 2009 TQ

2009 TQ

2009 TQ belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.256 AU it takes 1.41 yr to circle the Sun.

Apollo Observations: 50
Orbital Period · P
1.41 yr
v(q)
33.8 km/s
v(Q)
20.9 km/s
Diameter · ≈
0.02 km
TJ
5.07
Eccentricity · e
0.2358

Orbit and dynamics

Between its closest point (0.96 AU) and its farthest (1.552 AU), the heliocentric distance changes by 0.592 AU over every revolution.

One full revolution takes 1.41 yr (514 days), computed from the semi-major axis of 1.256 AU.

An eccentricity of 0.236 makes the orbit moderately elongated.

The orbital plane is tilted 12.89° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 33.8 km/s at perihelion and falls to 20.9 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 = 25.9 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

Astrometry from 50 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4301 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
1.256 AU
Eccentricity
0.2358
Perihelion
0.96 AU
Aphelion
1.552165 AU
Inclination
12.89°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
273.97°

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
2027-Apr-18 17:54 0.476953 AU
71351084 km
9.59 km/s
2033-Sep-13 10:00 0.335289 AU
50158512 km
19.82 km/s
2054-Oct-21 13:14 0.073962 AU
11064533 km
7.33 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
25.9

Orbit Quality

RMS
0.4301
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

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