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Asteroid Near-Earth

2017 JS1

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(2017 JS1)

Where is it now

Distance from Sun
1.156 AU
True anomaly
149.48°
Distance from Earth
2.045 AU
As of
22 October 2026

Two-body Kepler propagation — accurate to ~0.1% for major planets over decades, less so for highly-perturbed bodies. Use JPL Horizons for high precision.

Sun Earth — 0.995 AU from the Sun Earth 2017 JS1 — 1.156 AU from the Sun 2017 JS1
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2017 JS1 is 2.045 AU from Earth today (17.0 light-minutes).

In the sky

Right ascension
15h 10m 15s
Declination
-14° 57′ 53″
Constellation
Libra
Distance from Earth
2.05 AU
Elongation from the Sun
19.4° — too close to the Sun to observe

Visible from both hemispheres.

From your location

See how high it is right now, whether it is up after civil twilight, and when it rises and sets where you are.

How do I find my coordinates?

Google Maps on a computer

  1. Right-click the spot where you'll be observing.
  2. The first line of the menu is the coordinates, e.g. 51.50722, -0.12758 — click it and they're copied.
  3. Paste them above.

Google Maps on a phone

  1. Press and hold the spot to drop a pin.
  2. The coordinates appear in the search bar (or on the pin's card) — tap to copy, then paste above.

A full Google Maps link works too, but the short maps.app.goo.gl share links don't carry coordinates — copy the numbers instead. We round to about a kilometre; that's all the sky calculation needs.

Know your what3words address? Paste it, e.g. ///filled.count.soap. This is optional — the three words are sent to what3words to convert them, and we don't store the address or the result.

Your location stays in your browser and is sent only for this calculation. Using a what3words address is optional; if you do, the three words go to what3words to be converted and we don't record them. Set a location first, then you can save an email alert for this object. See our privacy policy.

Two-body approximation, good to about a degree for the planets — enough to find the constellation and know whether it is up.

Orbital elements

Semi-major axis
0.959 AU
Eccentricity
0.2663
Inclination
11.16°
Orbital period
342.9 days
Perihelion
0.704 AU
Aphelion
1.214 AU
Longitude of ascending node
220.89°
Argument of periapsis
235.31°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 10.1 LD
0.0258 AU
Tisserand (Jupiter)
6.239

Orbit quality

Orbit poorly determined (uncertainty code 6).

Observations used
51
Data arc
15 days
First observed
2 May 2017
Last observed
17 May 2017
Residual RMS
0.52 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
25.5

Discovery & classification

Aten Near-Earth Object

Close approaches 97 on record

Flyby geometry
Ecliptic flyby of 2017 JS1 at 2031-05-11 01:16 UTC Top-down view of the ecliptic, Earth at the centre, for the 2031-05-11 01:16 UTC close approach of 2017 JS1. Catalogue miss distance 180.5 LD · 6.94 × 10⁷ km. The curve is the geocentric path from 2031-05-08 to 2031-05-14, with a mark at UTC midnights and an arrow for the direction of motion. The circle is the Moon’s mean orbit; the Moon is plotted at closest approach. A ray shows the Sun’s direction. The labelled distance is the full separation. The drawn radius is the part that lies in the ecliptic plane. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 180.5 LD · 6.94 × 10⁷ km 2031-05-11 01:16 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2031-05-11 01:16 UTC close approach of 2017 JS1. Catalogue miss distance 180.5 LD · 6.94 × 10⁷ km. The curve is the geocentric path from 2031-05-08 to 2031-05-14, with a mark at UTC midnights and an arrow for the direction of motion. The circle is the Moon’s mean orbit; the Moon is plotted at closest approach. A ray shows the Sun’s direction. The labelled distance is the full separation. The drawn radius is the part that lies in the ecliptic plane. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate.

JPL Horizons

When (UTC) Body Distance Lunar distances Relative speed
2031-05-11 01:16:00 Earth 0.4637 AU 180.5 LD 22 km/s
2032-04-26 10:35:00 Earth 0.0997 AU 38.8 LD 11.5 km/s
2033-02-18 07:31:00 Earth 0.2825 AU 109.9 LD 6.7 km/s
2033-05-27 21:50:00 Earth 0.2199 AU 85.6 LD 7.1 km/s
2033-12-11 06:06:00 Earth 0.2938 AU 114.4 LD 10.6 km/s
2034-10-07 16:42:00 Earth 0.1665 AU 64.8 LD 8.4 km/s
2034-11-07 06:21:00 Venus 0.0299 AU 11.6 LD 10.4 km/s
2035-08-31 09:32:00 Earth 0.3074 AU 119.6 LD 16 km/s
2047-05-03 20:40:00 Earth 0.293 AU 114.0 LD 17 km/s
2048-04-26 23:20:00 Earth 0.0742 AU 28.9 LD 7.7 km/s

Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.

Sources