SpaceAtlas Space Object Data
NASA JPL SBDB · 382P

Larson

Larson follows a distinctly cometary orbit: an eccentricity of 0.276 carries it from 4.38 AU at perihelion out to 7.724 AU at aphelion.

comet Observations: 543
Orbital Period · P
14.9 yr
v(q)
16.1 km/s
v(Q)
9.1 km/s
TJ
2.91
Eccentricity · e
0.2762

Orbit and dynamics

The path is an ellipse reaching 4.38 AU from the Sun at perihelion and 7.724 AU at aphelion, a radial span of 3.344 AU.

Applying Kepler's third law to a = 6.052 AU gives an orbital period of 14.9 yr, or about 5,438 days.

An eccentricity of 0.276 makes the orbit moderately elongated.

The orbital plane is tilted 7.87° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 16.1 km/s at perihelion and falls to 9.1 km/s at aphelion.

Its Tisserand parameter with respect to Jupiter is T_J = 2.91, a standard discriminator between asteroidal and cometary dynamics.

Size and surface

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

Observation record and orbit quality

The current orbit solution is based on 543 observations and has a weighted RMS residual of 0.6631 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
6.052 AU
Eccentricity
0.2762
Perihelion
4.38 AU
Aphelion
7.723562 AU
Inclination
7.87°
Orbital Period
— yr
Epoch
2457067.5
Mean Anomaly
181.17°

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
0.66309
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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