SpaceAtlas Space Object Data
NASA JPL SBDB · 2009 B2

LINEAR

LINEAR follows a distinctly cometary orbit: an eccentricity of 0.944 carries it from 2.328 AU at perihelion out to 81.213 AU at aphelion.

comet Observations: 187
Orbital Period · P
270 yr
v(q)
27.2 km/s
v(Q)
0.8 km/s
TJ
-1.59
Eccentricity · e
0.9443

Orbit and dynamics

The path is an ellipse reaching 2.328 AU from the Sun at perihelion and 81.213 AU at aphelion, a radial span of 78.885 AU.

Applying Kepler's third law to a = 41.77 AU gives an orbital period of 270 yr, or about 98,602 days.

The high eccentricity (0.944) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 156.9° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 27.2 km/s at perihelion and falls to 0.8 km/s at aphelion.

Its Tisserand parameter with respect to Jupiter is T_J = -1.59, a standard discriminator between asteroidal and cometary dynamics.

Size and surface

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

Observation record and orbit quality

The current orbit solution is based on 187 observations and has a weighted RMS residual of 0.7624 arcseconds.

Condition code U = 5 indicates a moderately constrained orbit; predictions decades ahead still carry noticeable uncertainty.

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
41.77 AU
Eccentricity
0.9443
Perihelion
2.328 AU
Aphelion
81.213411 AU
Inclination
156.87°
Orbital Period
— yr
Epoch
2454901.5
Mean Anomaly
0.01°

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
0.76239
Condition
5
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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