SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 BX

2017 BX

2017 BX belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.461 AU it takes 1.77 yr to circle the Sun.

Apollo Observations: 75
Orbital Period · P
1.77 yr
v(q)
35.8 km/s
v(Q)
16.9 km/s
Diameter · ≈
0.01 km
TJ
4.55
Eccentricity · e
0.3577

Orbit and dynamics

Between its closest point (0.938 AU) and its farthest (1.984 AU), the heliocentric distance changes by 1.046 AU over every revolution.

One full revolution takes 1.77 yr (645 days), computed from the semi-major axis of 1.461 AU.

An eccentricity of 0.358 makes the orbit moderately elongated.

Its inclination of 4.61° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 35.8 km/s at perihelion and falls to 16.9 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 = 28 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 75 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3659 arcseconds.

Condition code U = 6 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
1.461 AU
Eccentricity
0.3577
Perihelion
0.938 AU
Aphelion
1.9836 AU
Inclination
4.61°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
95.65°

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
2039-Dec-28 09:49 0.293252 AU
43869936 km
17.46 km/s
2054-May-06 22:33 0.169998 AU
25431295 km
15.19 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
28.0

Orbit Quality

RMS
0.36586
Condition
6
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.