SpaceAtlas Space Object Data
NASA JPL SBDB · 2005 TR50

2005 TR50

2005 TR50 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.614 AU it takes 2.05 yr to circle the Sun.

Apollo Observations: 82
Orbital Period · P
2.05 yr
v(q)
38.4 km/s
v(Q)
14.3 km/s
Diameter · ≈
0.32 km
TJ
4.05
Eccentricity · e
0.456

Orbit and dynamics

The path is an ellipse reaching 0.878 AU from the Sun at perihelion and 2.35 AU at aphelion, a radial span of 1.472 AU.

Applying Kepler's third law to a = 1.614 AU gives an orbital period of 2.05 yr, or about 749 days.

The high eccentricity (0.456) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 34.04° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 38.4 km/s at perihelion and falls to 14.3 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 = 20.21 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.32 km.

Observation record and orbit quality

The current orbit solution is based on 82 observations and has a weighted RMS residual of 0.4899 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
1.614 AU
Eccentricity
0.456
Perihelion
0.878 AU
Aphelion
2.349984 AU
Inclination
34.04°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
1.46°

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
2042-Sep-29 12:35 0.454104 AU
67933029 km
29.30 km/s
2044-Oct-14 23:21 0.141953 AU
21235935 km
23.11 km/s
2046-Nov-01 08:29 0.172206 AU
25761720 km
19.47 km/s
2048-Nov-23 08:38 0.488494 AU
73077683 km
20.04 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
20.21

Orbit Quality

RMS
0.48986
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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