SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 YF

2020 YF

2020 YF is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.871 AU and a period of 0.81 yr.

Aten Observations: 74
Orbital Period · P
0.81 yr
v(q)
36.7 km/s
v(Q)
27.8 km/s
Diameter · ≈
0.01 km
TJ
6.78
Eccentricity · e
0.1376

Orbit and dynamics

Between its closest point (0.751 AU) and its farthest (0.991 AU), the heliocentric distance changes by 0.24 AU over every revolution.

One full revolution takes 0.81 yr (297 days), computed from the semi-major axis of 0.871 AU.

An eccentricity of 0.138 makes the orbit moderately elongated.

Its inclination of 2.54° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 36.7 km/s at perihelion and falls to 27.8 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 28.82 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 74 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4397 arcseconds.

Condition code U = 5 indicates a moderately constrained orbit; predictions decades ahead still carry noticeable uncertainty.

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
0.8711 AU
Eccentricity
0.1376
Perihelion
0.751 AU
Aphelion
0.990963 AU
Inclination
2.54°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
100.84°

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-Jul-14 06:45 0.246174 AU
36827072 km
6.56 km/s
2030-Jan-01 03:52 0.325281 AU
48661306 km
13.34 km/s
2033-Nov-15 05:49 0.034820 AU
5208998 km
3.61 km/s
2038-Jun-06 11:50 0.259887 AU
38878589 km
7.32 km/s
2042-Sep-24 05:27 0.148331 AU
22190002 km
1.37 km/s
2043-Jan-05 21:03 0.056713 AU
8484207 km
4.76 km/s
2046-Nov-12 23:50 0.294928 AU
44120545 km
12.30 km/s
2047-Apr-29 06:06 0.239638 AU
35849317 km
6.35 km/s
2051-Jul-13 21:35 0.246314 AU
36848112 km
6.58 km/s
2052-Jan-01 23:26 0.334761 AU
50079577 km
13.54 km/s
2055-Nov-15 06:12 0.037341 AU
5586193 km
3.74 km/s
2060-Jun-13 12:36 0.258298 AU
38640769 km
7.28 km/s
2060-Dec-27 06:17 0.492690 AU
73705421 km
18.58 km/s
2064-Dec-02 21:25 0.012674 AU
1896024 km
2.87 km/s
2069-Jul-06 08:34 0.243154 AU
36375263 km
6.64 km/s
2070-Jan-02 00:50 0.342078 AU
51174077 km
13.81 km/s
2073-Nov-09 15:56 0.287009 AU
42936006 km
12.03 km/s
2074-May-01 13:15 0.235349 AU
35207707 km
6.31 km/s
2078-Dec-22 13:30 0.008806 AU
1317394 km
3.06 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
28.82

Orbit Quality

RMS
0.43969
Condition
5
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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