SpaceAtlas Space Object Data
NASA JPL SBDB · 2011 GJ44

2011 GJ44

2011 GJ44 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.171 AU it takes 1.27 yr to circle the Sun.

Apollo Observations: 37
Orbital Period · P
1.27 yr
v(q)
39.5 km/s
v(Q)
19.2 km/s
Diameter · ≈
0.16 km
TJ
5.24
Eccentricity · e
0.3463

Orbit and dynamics

Between its closest point (0.766 AU) and its farthest (1.577 AU), the heliocentric distance changes by 0.811 AU over every revolution.

One full revolution takes 1.27 yr (463 days), computed from the semi-major axis of 1.171 AU.

An eccentricity of 0.346 makes the orbit moderately elongated.

A steep inclination of 26.5° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 39.5 km/s at perihelion and falls to 19.2 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 = 21.8 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.16 km.

Observation record and orbit quality

Astrometry from 37 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5535 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
1.171 AU
Eccentricity
0.3463
Perihelion
0.766 AU
Aphelion
1.576517 AU
Inclination
26.5°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
251.16°

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-Apr-14 02:05 0.319466 AU
47791425 km
14.27 km/s
2039-Apr-20 05:49 0.336486 AU
50337622 km
24.81 km/s
2044-Apr-24 16:04 0.260762 AU
39009478 km
16.27 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
21.8

Orbit Quality

RMS
0.55354
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.

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