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Asteroid Near-Earth

2025 UX18

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(2025 UX18)

Where is it now

Distance from Sun
1.067 AU
True anomaly
144.98°
Distance from Earth
0.587 AU
As of
21 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 2025 UX18 — 1.067 AU from the Sun 2025 UX18
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2025 UX18 is 0.587 AU from Earth today (4.9 light-minutes).

In the sky

Right ascension
08h 38m 24s
Declination
+12° 57′ 20″
Constellation
Cancer
Distance from Earth
0.58 AU
Elongation from the Sun
80.61° — well clear of the Sun

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
0.93 AU
Eccentricity
0.1986
Inclination
6.83°
Orbital period
327.7 days
Perihelion
0.745 AU
Aphelion
1.115 AU
Longitude of ascending node
216.57°
Argument of periapsis
59.67°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 0.1 LD
0.0002 AU
Tisserand (Jupiter)
6.416

Orbit quality

Orbit poorly determined (uncertainty code 6).

Observations used
18
Data arc
24 hours
First observed
31 October 2025
Last observed
1 November 2025
Residual RMS
0.23 ″
Solution · Otto Matic
2 November 2025

Visual & observation

Absolute magnitude (H)
30.33

Discovery & classification

Listed by JPL impact monitoring; see the Sentry table for current probabilities.

Aten Near-Earth Object

Close approaches 19 on record

Flyby geometry
Ecliptic flyby of 2025 UX18 at 2027-02-28 04:10 UTC Top-down view of the ecliptic, Earth at the centre, for the 2027-02-28 04:10 UTC close approach of 2025 UX18. Catalogue miss distance 65.4 LD · 2.51 × 10⁷ km. The curve is the geocentric path from 2027-02-25 to 2027-03-03, 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. At closest approach the object is south of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 65.4 LD · 2.51 × 10⁷ km 2027-02-28 04:10 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2027-02-28 04:10 UTC close approach of 2025 UX18. Catalogue miss distance 65.4 LD · 2.51 × 10⁷ km. The curve is the geocentric path from 2027-02-25 to 2027-03-03, 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. At closest approach the object is south of the ecliptic. 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
2027-02-28 04:10:00 Earth 0.1679 AU 65.4 LD 10.8 km/s
2032-09-14 06:05:00 Venus 0.0689 AU 26.8 LD 8.5 km/s
2034-12-06 10:04:00 Earth 0.151 AU 58.8 LD 5.3 km/s
2042-07-22 03:21:00 Venus 0.0882 AU 34.3 LD 6.1 km/s
2044-03-17 22:03:00 Earth 0.1222 AU 47.5 LD 5.1 km/s
2051-10-30 15:10:00 Earth 0.0273 AU 10.6 LD 7.7 km/s
2053-03-03 00:44:00 Earth 0.1305 AU 50.8 LD 9.3 km/s
2054-03-26 21:14:00 Venus 0.1043 AU 40.6 LD 10 km/s
2060-10-31 06:23:00 Earth 0.0401 AU 15.6 LD 6 km/s
2069-12-09 02:34:00 Earth 0.1557 AU 60.6 LD 5.3 km/s

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

Sources