SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 JW1

2017 JW1

2017 JW1 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.783 AU once every 2.38 yr.

Amor Observations: 70
Orbital Period · P
2.38 yr
v(q)
35.2 km/s
v(Q)
14.1 km/s
Diameter · ≈
0.17 km
TJ
3.78
Eccentricity · e
0.4272

Orbit and dynamics

The path is an ellipse reaching 1.021 AU from the Sun at perihelion and 2.545 AU at aphelion, a radial span of 1.524 AU.

Applying Kepler's third law to a = 1.783 AU gives an orbital period of 2.38 yr, or about 870 days.

The high eccentricity (0.427) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 35.73° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 35.2 km/s at perihelion and falls to 14.1 km/s at aphelion.

Its perihelion lies just outside Earth's orbit, which is why it is classed as Earth-approaching rather than Earth-crossing.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 21.6 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.17 km.

Observation record and orbit quality

The current orbit solution is based on 70 observations and has a weighted RMS residual of 0.4997 arcseconds.

Condition code U = 4 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
1.783 AU
Eccentricity
0.4272
Perihelion
1.021 AU
Aphelion
2.544698 AU
Inclination
35.73°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
266.07°

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-May-07 08:31 0.452432 AU
67682842 km
27.61 km/s
2036-Jun-02 17:55 0.444586 AU
66509152 km
18.57 km/s
2048-May-17 11:22 0.189465 AU
28343593 km
22.56 km/s
2067-May-27 10:56 0.171187 AU
25609143 km
19.28 km/s
2079-May-07 20:44 0.433595 AU
64864892 km
27.59 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
21.6

Orbit Quality

RMS
0.49967
Condition
4
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.

Keep exploring

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