SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 US10

2019 US10

2019 US10 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.453 AU it takes 1.75 yr to circle the Sun.

Apollo Observations: 52
Orbital Period · P
1.75 yr
v(q)
37.1 km/s
v(Q)
16.5 km/s
Diameter · ≈
0.26 km
TJ
4.45
Eccentricity · e
0.3855

Orbit and dynamics

Between its closest point (0.893 AU) and its farthest (2.013 AU), the heliocentric distance changes by 1.12 AU over every revolution.

One full revolution takes 1.75 yr (640 days), computed from the semi-major axis of 1.453 AU.

An eccentricity of 0.386 makes the orbit moderately elongated.

A steep inclination of 26.94° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 37.1 km/s at perihelion and falls to 16.5 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 = 20.68 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.26 km.

Observation record and orbit quality

Astrometry from 52 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5436 arcseconds.

Condition code U = 0 means the orbit is very well determined, leaving only a small uncertainty in the future ephemeris.

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
1.453 AU
Eccentricity
0.3855
Perihelion
0.893 AU
Aphelion
2.013132 AU
Inclination
26.94°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
309.53°

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
2033-Jun-01 08:12 0.394801 AU
59061396 km
14.21 km/s
2033-Oct-21 02:50 0.261094 AU
39059162 km
14.83 km/s
2040-May-31 19:58 0.398831 AU
59664218 km
14.17 km/s
2040-Oct-21 14:14 0.249111 AU
37266403 km
14.87 km/s
2047-Jun-01 10:10 0.400558 AU
59922568 km
14.15 km/s
2047-Oct-22 19:00 0.243545 AU
36433771 km
14.89 km/s
2054-Jun-01 05:43 0.400490 AU
59912508 km
14.16 km/s
2054-Oct-22 12:18 0.243601 AU
36442206 km
14.89 km/s
2061-Jun-01 05:56 0.397664 AU
59489656 km
14.18 km/s
2061-Oct-21 16:30 0.252514 AU
37775560 km
14.86 km/s
2068-Jun-01 11:59 0.392219 AU
58675065 km
14.26 km/s
2068-Oct-20 03:18 0.271352 AU
40593614 km
14.82 km/s
2075-Jun-02 21:58 0.386328 AU
57793817 km
14.36 km/s
2075-Oct-19 04:35 0.293743 AU
43943295 km
14.80 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
20.68

Orbit Quality

RMS
0.54361
Condition
0
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.

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