SpaceAtlas Space Object Data
NASA JPL SBDB · 2011 GP44

2011 GP44

2011 GP44 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.79 AU and a period of 0.70 yr.

Aten Observations: 39
Orbital Period · P
0.70 yr
v(q)
52.4 km/s
v(Q)
21.4 km/s
Diameter · ≈
0.05 km
TJ
7.29
Eccentricity · e
0.4187

Orbit and dynamics

Between its closest point (0.459 AU) and its farthest (1.121 AU), the heliocentric distance changes by 0.662 AU over every revolution.

One full revolution takes 0.70 yr (257 days), computed from the semi-major axis of 0.79 AU.

The high eccentricity (0.419) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 7.68° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 52.4 km/s at perihelion and falls to 21.4 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 = 24.4 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.05 km.

Observation record and orbit quality

Astrometry from 39 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3284 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
0.7901 AU
Eccentricity
0.4187
Perihelion
0.459 AU
Aphelion
1.120915 AU
Inclination
7.68°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
359.16°

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
2028-May-15 09:49 0.329118 AU
49235295 km
25.07 km/s
2032-Mar-27 02:38 0.111491 AU
16678834 km
19.67 km/s
2035-May-21 07:23 0.157639 AU
23582480 km
20.70 km/s
2042-May-25 06:02 0.108897 AU
16290692 km
16.47 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
24.4

Orbit Quality

RMS
0.32842
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

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