SpaceAtlas Space Object Data
NASA JPL SBDB · 2015 H1

Bressi

Bressi follows a distinctly cometary orbit: an eccentricity of 0.941 carries it from 1.926 AU at perihelion out to 63.154 AU at aphelion.

comet Observations: 210
Orbital Period · P
186 yr
v(q)
29.9 km/s
v(Q)
0.9 km/s
TJ
-1.15
Eccentricity · e
0.9408

Orbit and dynamics

The path is an ellipse reaching 1.926 AU from the Sun at perihelion and 63.154 AU at aphelion, a radial span of 61.228 AU.

Applying Kepler's third law to a = 32.54 AU gives an orbital period of 186 yr, or about 67,798 days.

The high eccentricity (0.941) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 140.7° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 29.9 km/s at perihelion and falls to 0.9 km/s at aphelion.

Its Tisserand parameter with respect to Jupiter is T_J = -1.15, a standard discriminator between asteroidal and cometary dynamics.

Size and surface

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

Observation record and orbit quality

The current orbit solution is based on 210 observations and has a weighted RMS residual of 0.6201 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
32.54 AU
Eccentricity
0.9408
Perihelion
1.926 AU
Aphelion
63.153632 AU
Inclination
140.66°
Orbital Period
— yr
Epoch
2457169.5
Mean Anomaly
0.32°

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
0.6201
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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