SpaceAtlas Space Object Data
NASA JPL SBDB · 2008 UB95

2008 UB95

2008 UB95 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.989 AU and a period of 0.98 yr.

Aten Observations: 66
Orbital Period · P
0.98 yr
v(q)
39.4 km/s
v(Q)
22.7 km/s
Diameter · ≈
0.04 km
TJ
6.1
Eccentricity · e
0.2686

Orbit and dynamics

The path is an ellipse reaching 0.724 AU from the Sun at perihelion and 1.255 AU at aphelion, a radial span of 0.531 AU.

Applying Kepler's third law to a = 0.989 AU gives an orbital period of 0.98 yr, or about 359 days.

An eccentricity of 0.269 makes the orbit moderately elongated.

Its inclination of 3.26° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 39.4 km/s at perihelion and falls to 22.7 km/s at aphelion.

Because q < 1 AU and Q > 1 AU, this orbit geometrically intersects the region of Earth's orbit.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 24.8 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.

Observation record and orbit quality

The current orbit solution is based on 66 observations and has a weighted RMS residual of 0.424 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
0.9894 AU
Eccentricity
0.2686
Perihelion
0.724 AU
Aphelion
1.255153 AU
Inclination
3.26°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
47.55°

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
24.8

Orbit Quality

RMS
0.42398
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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