SpaceAtlas Space Object Data
NASA JPL SBDB · 2007 YB2

2007 YB2

2007 YB2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 3.069 AU it takes 5.38 yr to circle the Sun.

Apollo Observations: 157
Orbital Period · P
5.38 yr
v(q)
40.1 km/s
v(Q)
7.2 km/s
Diameter · ≈
0.78 km
TJ
2.75
Eccentricity · e
0.6954

Orbit and dynamics

The path is an ellipse reaching 0.935 AU from the Sun at perihelion and 5.203 AU at aphelion, a radial span of 4.268 AU.

Applying Kepler's third law to a = 3.069 AU gives an orbital period of 5.38 yr, or about 1,964 days.

The high eccentricity (0.695) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 16.4° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 40.1 km/s at perihelion and falls to 7.2 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 = 18.3 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.78 km.

Observation record and orbit quality

The current orbit solution is based on 157 observations and has a weighted RMS residual of 0.4865 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
3.069 AU
Eccentricity
0.6954
Perihelion
0.935 AU
Aphelion
5.203183 AU
Inclination
16.4°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
134.44°

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
18.3

Orbit Quality

RMS
0.48646
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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