SpaceAtlas Space Object Data
NASA JPL SBDB · 457P

Lemmon-PANSTARRS

Lemmon-PANSTARRS follows a distinctly cometary orbit: an eccentricity of 0.12 carries it from 2.329 AU at perihelion out to 2.963 AU at aphelion.

comet Observations: 136
Orbital Period · P
4.30 yr
v(q)
20.7 km/s
v(Q)
16.2 km/s
TJ
3.38
Eccentricity · e
0.1198

Orbit and dynamics

Between its closest point (2.329 AU) and its farthest (2.963 AU), the heliocentric distance changes by 0.634 AU over every revolution.

One full revolution takes 4.30 yr (1,572 days), computed from the semi-major axis of 2.646 AU.

An eccentricity of 0.12 makes the orbit moderately elongated.

The orbital plane is tilted 5.22° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 20.7 km/s at perihelion and falls to 16.2 km/s at aphelion.

Its Tisserand parameter with respect to Jupiter is T_J = 3.38, a standard discriminator between asteroidal and cometary dynamics.

Size and surface

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

Observation record and orbit quality

Astrometry from 136 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4302 arcseconds.

Condition code U = 1 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
2.646 AU
Eccentricity
0.1198
Perihelion
2.329 AU
Aphelion
2.962991 AU
Inclination
5.22°
Orbital Period
— yr
Epoch
2458952.5
Mean Anomaly
355.13°

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
0.43018
Condition
1
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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