SpaceAtlas Space Object Data
NASA JPL SBDB · 429P

LINEAR-Hill

LINEAR-Hill follows a distinctly cometary orbit: an eccentricity of 0.507 carries it from 1.723 AU at perihelion out to 5.263 AU at aphelion.

comet Observations: 587
Orbital Period · P
6.53 yr
v(q)
27.9 km/s
v(Q)
9.1 km/s
TJ
2.89
Eccentricity · e
0.5067

Orbit and dynamics

The path is an ellipse reaching 1.723 AU from the Sun at perihelion and 5.263 AU at aphelion, a radial span of 3.54 AU.

Applying Kepler's third law to a = 3.493 AU gives an orbital period of 6.53 yr, or about 2,384 days.

The high eccentricity (0.507) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 7.75° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 27.9 km/s at perihelion and falls to 9.1 km/s at aphelion.

Its Tisserand parameter with respect to Jupiter is T_J = 2.89, a standard discriminator between asteroidal and cometary dynamics.

Size and surface

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

Observation record and orbit quality

The current orbit solution is based on 587 observations and has a weighted RMS residual of 0.748 arcseconds.

Condition code U = 0 means the orbit is very well determined, leaving only a small uncertainty in the future ephemeris.

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
3.493 AU
Eccentricity
0.5067
Perihelion
1.723 AU
Aphelion
5.262903 AU
Inclination
7.75°
Orbital Period
— yr
Epoch
2455363.5
Mean Anomaly
89.11°

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
0.74805
Condition
0
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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