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Asteroid Near-Earth

2018 GS1

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(2018 GS1)

Where is it now

Distance from Sun
0.999 AU
True anomaly
310.04°
Distance from Earth
0.104 AU
As of
11 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 — 0.998 AU from the Sun Earth 2018 GS1 — 0.999 AU from the Sun 2018 GS1
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2018 GS1 is 0.104 AU from Earth today (52.1 light-seconds).

In the sky

Right ascension
22h 24m 27s
Declination
-84° 05′ 58″
Constellation
Octans
Distance from Earth
0.1 AU
Elongation from the Sun
87.11° — well clear of the Sun

Favours the southern hemisphere; low or below the horizon from far north.

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
1.083 AU
Eccentricity
0.1108
Inclination
17.15°
Orbital period
411.7 days
Perihelion
0.963 AU
Aphelion
1.203 AU
Longitude of ascending node
33.63°
Argument of periapsis
31.37°
Epoch · J2000
2461200.5
Orbit class · APO
Apollo
Earth MOID · 6.6 LD
0.017 AU
Tisserand (Jupiter)
5.671

Orbit quality

Orbit reasonably well determined (uncertainty code 5).

Observations used
80
Data arc
47 days
First observed
29 March 2018
Last observed
15 May 2018
Residual RMS
0.48 ″
Solution · Otto Matic
14 August 2022

Visual & observation

Absolute magnitude (H)
22.59

Discovery & classification

Apollo Near-Earth Object

Close approaches 72 on record

Flyby geometry
Ecliptic flyby of 2018 GS1 at 2026-10-28 16:15 UTC Top-down view of the ecliptic, Earth at the centre, for the 2026-10-28 16:15 UTC close approach of 2018 GS1. Catalogue miss distance 11.0 LD · 4.24 × 10⁶ km. The curve is the geocentric path from 2026-10-25 to 2026-10-31, 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 11.0 LD · 4.24 × 10⁶ km 2026-10-28 16:15 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2026-10-28 16:15 UTC close approach of 2018 GS1. Catalogue miss distance 11.0 LD · 4.24 × 10⁶ km. The curve is the geocentric path from 2026-10-25 to 2026-10-31, 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
2026-10-28 16:15:00 Earth 0.0283 AU 11.0 LD 9.3 km/s
2027-04-03 10:22:00 Earth 0.2129 AU 82.8 LD 9.4 km/s
2035-05-25 20:55:00 Earth 0.2973 AU 115.7 LD 8.7 km/s
2035-11-14 02:58:00 Earth 0.235 AU 91.5 LD 11 km/s
2036-03-15 15:54:00 Earth 0.3258 AU 126.8 LD 10.8 km/s
2043-10-03 17:15:00 Earth 0.3458 AU 134.6 LD 14.8 km/s
2044-05-02 06:16:00 Earth 0.2104 AU 81.9 LD 9 km/s
2044-12-03 23:42:00 Earth 0.457 AU 177.9 LD 15.7 km/s
2052-10-17 16:42:00 Earth 0.1272 AU 49.5 LD 10.5 km/s
2053-04-14 18:30:00 Earth 0.1754 AU 68.3 LD 9.1 km/s

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

Sources