SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 YT

2020 YT

2020 YT is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.801 AU and a period of 0.72 yr.

Aten Observations: 25
Orbital Period · P
0.72 yr
v(q)
49.1 km/s
v(Q)
22.6 km/s
Diameter · ≈
0.03 km
TJ
7.22
Eccentricity · e
0.3701

Orbit and dynamics

Between its closest point (0.505 AU) and its farthest (1.098 AU), the heliocentric distance changes by 0.593 AU over every revolution.

One full revolution takes 0.72 yr (262 days), computed from the semi-major axis of 0.801 AU.

An eccentricity of 0.37 makes the orbit moderately elongated.

The orbital plane is tilted 5.58° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 49.1 km/s at perihelion and falls to 22.6 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 = 25.51 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

Astrometry from 25 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3148 arcseconds.

Condition code U = 8 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
0.8013 AU
Eccentricity
0.3701
Perihelion
0.505 AU
Aphelion
1.097861 AU
Inclination
5.58°
Orbital Period
— yr
Epoch
2459200.5
Mean Anomaly
159.28°

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-Jan-25 03:12 0.178838 AU
26753717 km
19.37 km/s
2030-Nov-22 01:05 0.052637 AU
7874404 km
14.33 km/s
2034-Jan-29 19:13 0.065976 AU
9869935 km
14.46 km/s
2035-Nov-26 14:36 0.064999 AU
9723719 km
19.27 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
25.51

Orbit Quality

RMS
0.31484
Condition
8
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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