SpaceAtlas Space Object Data
NASA JPL SBDB · 2016 TR11

2016 TR11

2016 TR11 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.458 AU it takes 1.76 yr to circle the Sun.

Apollo Observations: 52
Orbital Period · P
1.76 yr
v(q)
41.3 km/s
v(Q)
14.7 km/s
Diameter · ≈
0.13 km
TJ
4.5
Eccentricity · e
0.4745

Orbit and dynamics

The path is an ellipse reaching 0.766 AU from the Sun at perihelion and 2.15 AU at aphelion, a radial span of 1.384 AU.

Applying Kepler's third law to a = 1.458 AU gives an orbital period of 1.76 yr, or about 643 days.

The high eccentricity (0.474) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

Its inclination of 4.93° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 41.3 km/s at perihelion and falls to 14.7 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 = 22.13 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.13 km.

Observation record and orbit quality

The current orbit solution is based on 52 observations and has a weighted RMS residual of 0.508 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
1.458 AU
Eccentricity
0.4745
Perihelion
0.766 AU
Aphelion
2.149821 AU
Inclination
4.93°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
143.05°

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
2030-Dec-31 11:26 0.214715 AU
32120967 km
11.34 km/s
2031-Apr-11 08:27 0.480407 AU
71867891 km
5.90 km/s
2038-Feb-14 04:47 0.184767 AU
27640726 km
10.03 km/s
2045-Mar-24 21:53 0.091604 AU
13703754 km
13.41 km/s
2052-Apr-08 22:28 0.298885 AU
44712617 km
20.95 km/s
2053-Oct-04 23:52 0.434867 AU
65055224 km
25.21 km/s
2060-Oct-18 03:57 0.192532 AU
28802415 km
17.75 km/s
2067-Nov-06 01:38 0.089705 AU
13419720 km
10.99 km/s
2074-Dec-21 01:23 0.204332 AU
30567679 km
10.95 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
22.13

Orbit Quality

RMS
0.50798
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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