SpaceAtlas Space Object Data
NASA JPL SBDB · 1999 K2

Ferris

Ferris follows a distinctly cometary orbit: an eccentricity of 0.966 carries it from 5.29 AU at perihelion out to 304.1 AU at aphelion.

comet Observations: 101
Orbital Period · P
1,924 yr
v(q)
18.2 km/s
v(Q)
0.3 km/s
TJ
0.42
Eccentricity · e
0.9658

Orbit and dynamics

Between its closest point (5.29 AU) and its farthest (304.1 AU), the heliocentric distance changes by 298.8 AU over every revolution.

One full revolution takes 1,924 yr (702,790 days), computed from the semi-major axis of 154.7 AU.

The high eccentricity (0.966) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 82.19° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 18.2 km/s at perihelion and falls to 0.3 km/s at aphelion.

Its Tisserand parameter with respect to Jupiter is T_J = 0.42, a standard discriminator between asteroidal and cometary dynamics.

Size and surface

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

Observation record and orbit quality

Astrometry from 101 individual observations underpins this orbit; the fit leaves an RMS residual of 0.8158 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
154.7 AU
Eccentricity
0.9658
Perihelion
5.29 AU
Aphelion
304.10926 AU
Inclination
82.19°
Orbital Period
— yr
Epoch
2451353.5
Mean Anomaly
0.04°

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
0.8158
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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