SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 SP

2019 SP

2019 SP belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.801 AU it takes 2.42 yr to circle the Sun.

Apollo Observations: 67
Orbital Period · P
2.42 yr
v(q)
43.4 km/s
v(Q)
11.4 km/s
Diameter · ≈
0.04 km
TJ
3.84
Eccentricity · e
0.5853

Orbit and dynamics

The path is an ellipse reaching 0.747 AU from the Sun at perihelion and 2.855 AU at aphelion, a radial span of 2.108 AU.

Applying Kepler's third law to a = 1.801 AU gives an orbital period of 2.42 yr, or about 883 days.

The high eccentricity (0.585) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

Its inclination of 4.73° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 43.4 km/s at perihelion and falls to 11.4 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 = 24.6 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.

Observation record and orbit quality

The current orbit solution is based on 67 observations and has a weighted RMS residual of 0.2991 arcseconds.

Condition code U = 3 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
1.801 AU
Eccentricity
0.5853
Perihelion
0.747 AU
Aphelion
2.855125 AU
Inclination
4.73°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
258.12°

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
2031-Dec-22 09:43 0.242811 AU
36324082 km
13.04 km/s
2044-Feb-29 08:11 0.166659 AU
24931774 km
19.86 km/s
2048-Sep-28 12:51 0.021009 AU
3142828 km
15.70 km/s
2060-Nov-27 09:24 0.241346 AU
36104899 km
13.10 km/s
2073-Feb-06 23:17 0.127086 AU
19011840 km
11.90 km/s
2077-Sep-09 14:54 0.341489 AU
51086093 km
25.30 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
24.6

Orbit Quality

RMS
0.29908
Condition
3
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.