SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 BP5

2017 BP5

2017 BP5 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.564 AU it takes 1.96 yr to circle the Sun.

Apollo Observations: 122
Orbital Period · P
1.96 yr
v(q)
59.4 km/s
v(Q)
9.5 km/s
Diameter · ≈
0.28 km
TJ
4.03
Eccentricity · e
0.723

Orbit and dynamics

The path is an ellipse reaching 0.433 AU from the Sun at perihelion and 2.695 AU at aphelion, a radial span of 2.262 AU.

Applying Kepler's third law to a = 1.564 AU gives an orbital period of 1.96 yr, or about 714 days.

The high eccentricity (0.723) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 22.29° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 59.4 km/s at perihelion and falls to 9.5 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 = 20.53 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.28 km.

Observation record and orbit quality

The current orbit solution is based on 122 observations and has a weighted RMS residual of 0.5865 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
1.564 AU
Eccentricity
0.723
Perihelion
0.433 AU
Aphelion
2.694772 AU
Inclination
22.29°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
329.63°

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

Predicted close approaches to Earth, from NASA's Center for Near-Earth Object Studies (CNEOS).

Date (UTC)Miss distanceVelocity
2063-Dec-03 08:47 0.038769 AU
5799753 km
25.38 km/s

Distances in astronomical units (AU) and kilometres. Source: NASA/JPL CNEOS Close Approach Data API.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
20.53

Orbit Quality

RMS
0.58654
Condition
0
Orbit ID
—
Data source: NASA JPL Small-Body Database · NASA CNEOS. 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.

Keep exploring

Explore asteroids, comets and near-Earth objects with JPL orbital data.