SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 QG

2019 QG

2019 QG is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.822 AU and a period of 0.74 yr.

Aten Observations: 79
Orbital Period · P
0.74 yr
v(q)
41.9 km/s
v(Q)
25.8 km/s
Diameter · ≈
0.19 km
TJ
7.09
Eccentricity · e
0.2386

Orbit and dynamics

Between its closest point (0.626 AU) and its farthest (1.018 AU), the heliocentric distance changes by 0.392 AU over every revolution.

One full revolution takes 0.74 yr (272 days), computed from the semi-major axis of 0.822 AU.

An eccentricity of 0.239 makes the orbit moderately elongated.

The orbital plane is tilted 12.63° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 41.9 km/s at perihelion and falls to 25.8 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 = 21.38 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.19 km.

Observation record and orbit quality

Astrometry from 79 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4007 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
0.8218 AU
Eccentricity
0.2386
Perihelion
0.626 AU
Aphelion
1.017881 AU
Inclination
12.63°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
227.6°

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
2051-Jul-22 17:12 0.142652 AU
21340401 km
10.78 km/s
2054-Jul-20 01:30 0.053283 AU
7970978 km
8.29 km/s
2057-Jul-20 17:02 0.083329 AU
12465904 km
6.85 km/s
2060-Aug-03 01:41 0.177836 AU
26603818 km
7.12 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
21.38

Orbit Quality

RMS
0.4007
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.

Keep exploring

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