SpaceAtlas Space Object Data
NASA JPL SBDB · 2012 PY19

2012 PY19

2012 PY19 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.873 AU and a period of 0.82 yr.

Aten Observations: 17
Orbital Period · P
0.82 yr
v(q)
39.1 km/s
v(Q)
26 km/s
Diameter · ≈
0.01 km
TJ
6.77
Eccentricity · e
0.2004

Orbit and dynamics

The path is an ellipse reaching 0.698 AU from the Sun at perihelion and 1.048 AU at aphelion, a radial span of 0.35 AU.

Applying Kepler's third law to a = 0.873 AU gives an orbital period of 0.82 yr, or about 298 days.

An eccentricity of 0.2 makes the orbit moderately elongated.

Its inclination of 1.36° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 39.1 km/s at perihelion and falls to 26 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 = 27.5 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

The current orbit solution is based on 17 observations and has a weighted RMS residual of 0.2814 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
0.8728 AU
Eccentricity
0.2004
Perihelion
0.698 AU
Aphelion
1.047709 AU
Inclination
1.36°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
174.4°

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
27.5

Orbit Quality

RMS
0.28137
Condition
6
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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