SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 FJ3

2020 FJ3

2020 FJ3 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.83 AU and a period of 0.76 yr.

Aten Observations: 31
Orbital Period · P
0.76 yr
v(q)
43.8 km/s
v(Q)
24.4 km/s
Diameter · ≈
0.06 km
TJ
7.02
Eccentricity · e
0.2842

Orbit and dynamics

The path is an ellipse reaching 0.594 AU from the Sun at perihelion and 1.066 AU at aphelion, a radial span of 0.472 AU.

Applying Kepler's third law to a = 0.83 AU gives an orbital period of 0.76 yr, or about 276 days.

An eccentricity of 0.284 makes the orbit moderately elongated.

The orbital plane is tilted 13.3° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 43.8 km/s at perihelion and falls to 24.4 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 = 23.93 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.06 km.

Observation record and orbit quality

The current orbit solution is based on 31 observations and has a weighted RMS residual of 0.6311 arcseconds.

Condition code U = 1 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
0.83 AU
Eccentricity
0.2842
Perihelion
0.594 AU
Aphelion
1.065886 AU
Inclination
13.3°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
228.41°

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-Mar-15 14:34 0.329535 AU
49297721 km
17.42 km/s
2029-Sep-10 00:41 0.389315 AU
58240683 km
14.89 km/s
2032-Mar-20 11:49 0.476029 AU
71212997 km
22.06 km/s
2032-Sep-27 03:48 0.400565 AU
59923648 km
15.89 km/s
2035-Oct-14 17:55 0.406670 AU
60836936 km
16.07 km/s
2038-Oct-31 14:58 0.406835 AU
60861661 km
15.32 km/s
2039-May-04 04:53 0.427405 AU
63938952 km
18.64 km/s
2041-Nov-18 18:08 0.398419 AU
59602639 km
13.53 km/s
2042-May-06 10:25 0.301564 AU
45113285 km
14.04 km/s
2044-Dec-09 15:58 0.375717 AU
56206472 km
10.31 km/s
2045-May-01 12:28 0.199584 AU
29857341 km
10.07 km/s
2048-Apr-13 02:49 0.126524 AU
18927705 km
8.34 km/s
2051-Mar-24 18:03 0.054203 AU
8108610 km
8.25 km/s
2054-Mar-13 22:20 0.079995 AU
11967088 km
9.99 km/s
2054-Aug-05 13:50 0.351933 AU
52648417 km
10.70 km/s
2057-Mar-12 17:57 0.209384 AU
31323450 km
13.72 km/s
2057-Aug-25 17:02 0.375525 AU
56177668 km
13.40 km/s
2060-Mar-16 04:23 0.352682 AU
52760523 km
18.15 km/s
2060-Sep-12 13:20 0.391374 AU
58548682 km
15.11 km/s
2063-Mar-22 00:36 0.495239 AU
74086652 km
22.67 km/s
2063-Sep-30 04:36 0.401754 AU
60101481 km
15.97 km/s
2066-Oct-16 18:13 0.407136 AU
60906668 km
16.00 km/s
2069-Nov-02 16:32 0.406465 AU
60806274 km
15.17 km/s
2070-May-04 10:59 0.411232 AU
61519441 km
18.08 km/s
2072-Nov-20 09:30 0.397173 AU
59416282 km
13.30 km/s
2073-May-06 06:41 0.291808 AU
43653929 km
13.66 km/s
2075-Dec-12 07:46 0.373358 AU
55853514 km
9.96 km/s
2076-Apr-30 12:06 0.193922 AU
29010281 km
9.87 km/s
2079-Apr-12 10:09 0.122387 AU
18308814 km
8.29 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
23.93

Orbit Quality

RMS
0.63106
Condition
1
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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