SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 YM1

2020 YM1

2020 YM1 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.905 AU and a period of 0.86 yr.

Aten Observations: 15
Orbital Period · P
0.86 yr
v(q)
35.2 km/s
v(Q)
27.9 km/s
Diameter · ≈
0 km
TJ
6.58
Eccentricity · e
0.1152

Orbit and dynamics

The path is an ellipse reaching 0.8 AU from the Sun at perihelion and 1.009 AU at aphelion, a radial span of 0.209 AU.

Applying Kepler's third law to a = 0.905 AU gives an orbital period of 0.86 yr, or about 314 days.

An eccentricity of 0.115 makes the orbit moderately elongated.

Its inclination of 2.6° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 35.2 km/s at perihelion and falls to 27.9 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 = 29.7 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0 km.

Observation record and orbit quality

The current orbit solution is based on 15 observations and has a weighted RMS residual of 0.4397 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
0.9047 AU
Eccentricity
0.1152
Perihelion
0.8 AU
Aphelion
1.008921 AU
Inclination
2.6°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
349.78°

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
2027-Mar-03 10:58 0.140080 AU
20955694 km
2.81 km/s
2032-Oct-16 12:27 0.257310 AU
38493098 km
11.18 km/s
2033-May-02 09:59 0.205311 AU
30714125 km
5.54 km/s
2033-Dec-18 18:45 0.455944 AU
68208278 km
17.60 km/s
2039-Jun-22 02:17 0.196267 AU
29361148 km
5.33 km/s
2039-Dec-28 05:19 0.218614 AU
32704256 km
10.15 km/s
2045-Aug-28 01:29 0.117130 AU
17522402 km
2.00 km/s
2045-Dec-26 03:11 0.002758 AU
412533 km
3.30 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
29.7

Orbit Quality

RMS
0.43974
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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