Orbit and dynamics
Between its closest point (0.713 AU) and its farthest (1.003 AU), the heliocentric distance changes by 0.29 AU over every revolution.
One full revolution takes 0.79 yr (290 days), computed from the semi-major axis of 0.858 AU.
An eccentricity of 0.169 makes the orbit moderately elongated.
Its inclination of 0.06° keeps it close to the plane of the ecliptic.
By the vis-viva equation its orbital speed rises to 38.1 km/s at perihelion and falls to 27.1 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
Neither a measured diameter nor a reliable absolute magnitude is available for 2020 DW, so its physical size remains unconstrained.
Observation record and orbit quality
Astrometry from 51 individual observations underpins this orbit; the fit leaves an RMS residual of 0.439 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
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 distance | Velocity |
|---|---|---|
| 2027-Sep-20 13:41 | 0.255016 AU 38149850 km |
6.58 km/s |
| 2028-Feb-25 18:05 | 0.217776 AU 32578815 km |
10.80 km/s |
| 2031-Aug-23 07:51 | 0.290797 AU 43502599 km |
8.27 km/s |
| 2032-Feb-20 17:09 | 0.381504 AU 57072165 km |
16.07 km/s |
| 2035-Aug-01 17:22 | 0.302029 AU 45182919 km |
8.79 km/s |
| 2039-Jan-02 21:32 | 0.455942 AU 68207907 km |
18.58 km/s |
| 2039-Jul-11 13:51 | 0.298509 AU 44656354 km |
8.60 km/s |
| 2042-Dec-28 13:19 | 0.311251 AU 46562416 km |
13.95 km/s |
| 2043-Jun-18 16:30 | 0.278795 AU 41707071 km |
7.63 km/s |
| 2046-Dec-23 17:50 | 0.185881 AU 27807354 km |
9.93 km/s |
| 2047-May-27 21:16 | 0.247654 AU 37048493 km |
6.10 km/s |
| 2050-Dec-22 04:56 | 0.087804 AU 13135234 km |
6.62 km/s |
| 2051-May-05 06:15 | 0.207452 AU 31034396 km |
4.08 km/s |
| 2054-Dec-26 09:26 | 0.014005 AU 2095128 km |
4.25 km/s |
| 2058-Dec-22 06:45 | 0.077522 AU 11597167 km |
7.00 km/s |
| 2059-May-12 04:32 | 0.202480 AU 30290606 km |
4.49 km/s |
| 2062-Dec-24 15:57 | 0.170397 AU 25491064 km |
9.55 km/s |
| 2063-May-28 17:38 | 0.240288 AU 35946507 km |
5.85 km/s |
| 2066-Dec-26 06:42 | 0.204173 AU 30543819 km |
11.34 km/s |
| 2067-Jun-08 07:55 | 0.246495 AU 36875198 km |
6.63 km/s |
| 2070-Dec-28 11:43 | 0.247759 AU 37064154 km |
13.78 km/s |
| 2075-Jan-01 01:56 | 0.327950 AU 49060687 km |
16.74 km/s |
| 2079-Jan-04 14:51 | 0.413300 AU 61828808 km |
19.78 km/s |
Distances in astronomical units (AU) and kilometres. Source: NASA/JPL CNEOS Close Approach Data API.
Physical Parameters
Orbit Quality
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