SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 SN1

2019 SN1

2019 SN1 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.273 AU it takes 1.44 yr to circle the Sun.

Apollo Observations: 30
Orbital Period · P
1.44 yr
v(q)
34.1 km/s
v(Q)
20.4 km/s
Diameter · ≈
0.02 km
TJ
5.02
Eccentricity · e
0.2504

Orbit and dynamics

The path is an ellipse reaching 0.954 AU from the Sun at perihelion and 1.592 AU at aphelion, a radial span of 0.638 AU.

Applying Kepler's third law to a = 1.273 AU gives an orbital period of 1.44 yr, or about 525 days.

An eccentricity of 0.25 makes the orbit moderately elongated.

The orbital plane is tilted 13.02° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 34.1 km/s at perihelion and falls to 20.4 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 = 26.5 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

The current orbit solution is based on 30 observations and has a weighted RMS residual of 0.5759 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
1.273 AU
Eccentricity
0.2504
Perihelion
0.954 AU
Aphelion
1.591759 AU
Inclination
13.02°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
275.9°

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
2029-Mar-23 00:04 0.401007 AU
59989846 km
9.27 km/s
2029-Oct-04 23:56 0.183447 AU
27443299 km
16.98 km/s
2032-May-12 12:53 0.217799 AU
32582307 km
12.65 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
26.5

Orbit Quality

RMS
0.57588
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.