SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 UP43

2017 UP43

2017 UP43 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.376 AU it takes 1.61 yr to circle the Sun.

Apollo Observations: 48
Orbital Period · P
1.61 yr
v(q)
35.9 km/s
v(Q)
18 km/s
Diameter · ≈
0.02 km
TJ
4.75
Eccentricity · e
0.3326

Orbit and dynamics

Between its closest point (0.918 AU) and its farthest (1.834 AU), the heliocentric distance changes by 0.916 AU over every revolution.

One full revolution takes 1.61 yr (590 days), computed from the semi-major axis of 1.376 AU.

An eccentricity of 0.333 makes the orbit moderately elongated.

Its inclination of 3.92° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 35.9 km/s at perihelion and falls to 18 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 = 26.4 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

Astrometry from 48 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4151 arcseconds.

Condition code U = 7 signals a poorly constrained orbit, so its future path should be treated as provisional.

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
1.376 AU
Eccentricity
0.3326
Perihelion
0.918 AU
Aphelion
1.833658 AU
Inclination
3.92°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
144.61°

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
2030-Jun-30 14:27 0.092770 AU
13878209 km
13.57 km/s
2051-Jun-21 04:54 0.197135 AU
29490971 km
18.68 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
26.4

Orbit Quality

RMS
0.41509
Condition
7
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.