SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 YO3

2017 YO3

2017 YO3 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.752 AU and a period of 0.65 yr.

Aten Observations: 25
Orbital Period · P
0.65 yr
v(q)
49.4 km/s
v(Q)
23.9 km/s
Diameter · ≈
0.01 km
TJ
7.62
Eccentricity · e
0.3489

Orbit and dynamics

The path is an ellipse reaching 0.49 AU from the Sun at perihelion and 1.015 AU at aphelion, a radial span of 0.525 AU.

Applying Kepler's third law to a = 0.752 AU gives an orbital period of 0.65 yr, or about 238 days.

An eccentricity of 0.349 makes the orbit moderately elongated.

The orbital plane is tilted 8.65° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 49.4 km/s at perihelion and falls to 23.9 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 = 28.2 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

The current orbit solution is based on 25 observations and has a weighted RMS residual of 0.5707 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
0.7525 AU
Eccentricity
0.3489
Perihelion
0.49 AU
Aphelion
1.015047 AU
Inclination
8.65°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
133.18°

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
2032-Dec-14 23:23 0.005767 AU
862738 km
10.14 km/s
2047-Dec-15 15:19 0.083294 AU
12460531 km
13.54 km/s
2052-Jan-30 00:50 0.108554 AU
16239403 km
10.82 km/s
2064-Dec-20 11:20 0.000031 AU
4655 km
8.21 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
28.2

Orbit Quality

RMS
0.57066
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.

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