SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 YM

2019 YM

2019 YM belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.157 AU it takes 3.17 yr to circle the Sun.

Apollo Observations: 31
Orbital Period · P
3.17 yr
v(q)
46 km/s
v(Q)
8.9 km/s
Diameter · ≈
0.02 km
TJ
3.36
Eccentricity · e
0.6749

Orbit and dynamics

Between its closest point (0.701 AU) and its farthest (3.613 AU), the heliocentric distance changes by 2.912 AU over every revolution.

One full revolution takes 3.17 yr (1,157 days), computed from the semi-major axis of 2.157 AU.

The high eccentricity (0.675) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

Its inclination of 2.22° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 46 km/s at perihelion and falls to 8.9 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 = 26.01 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

Astrometry from 31 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4133 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
2.157 AU
Eccentricity
0.6749
Perihelion
0.701 AU
Aphelion
3.612759 AU
Inclination
2.22°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
359.94°

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
2058-May-22 02:36 0.020572 AU
3077457 km
19.86 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
26.01

Orbit Quality

RMS
0.41328
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.