SpaceAtlas Space Object Data
NASA JPL SBDB · 2008 Q3

Garradd

Garradd follows a distinctly cometary orbit: an eccentricity of 1 carries it from 1.798 AU at perihelion out to 17,784 AU at aphelion.

comet Observations: 701
Orbital Period · P
838,634 yr
v(q)
31.4 km/s
v(Q)
0 km/s
TJ
-1.28
Eccentricity · e
0.9998

Orbit and dynamics

Between its closest point (1.798 AU) and its farthest (17,784 AU), the heliocentric distance changes by 17,782 AU over every revolution.

One full revolution takes 838,634 yr (306,311,049 days), computed from the semi-major axis of 8,893.0 AU.

The high eccentricity (1) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 140.7° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 31.4 km/s at perihelion and falls to 0 km/s at aphelion.

Its Tisserand parameter with respect to Jupiter is T_J = -1.28, a standard discriminator between asteroidal and cometary dynamics.

Size and surface

Neither a measured diameter nor a reliable absolute magnitude is available for Garradd, so its physical size remains unconstrained.

Observation record and orbit quality

Astrometry from 701 individual observations underpins this orbit; the fit leaves an RMS residual of 0.7247 arcseconds.

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
8893.0 AU
Eccentricity
0.9998
Perihelion
1.798 AU
Aphelion
17784.2214 AU
Inclination
140.71°
Orbital Period
— yr
Epoch
2455070.5
Mean Anomaly
0.0°

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

No close approaches to Earth are currently on record for this object.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
—

Orbit Quality

RMS
0.7247
Condition
—
Orbit ID
—
Data source: NASA JPL Small-Body Database . 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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