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Asteroid Near-Earth

2025 XU4

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(2025 XU4)

Where is it now

Distance from Sun
0.997 AU
True anomaly
124.03°
Distance from Earth
0.676 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 XU4 — 0.997 AU from the Sun 2025 XU4
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2025 XU4 is 0.676 AU from Earth today (5.6 light-minutes).

In the sky

Right ascension
09h 20m 21s
Declination
+12° 29′ 04″
Constellation
Cancer
Distance from Earth
0.68 AU
Elongation from the Sun
70.45° — 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
0.928 AU
Eccentricity
0.175
Inclination
2.17°
Orbital period
326.3 days
Perihelion
0.765 AU
Aphelion
1.09 AU
Longitude of ascending node
133.82°
Argument of periapsis
170.13°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 10.5 LD
0.0271 AU
Tisserand (Jupiter)
6.44

Orbit quality

Orbit poorly determined (uncertainty code 6).

Observations used
16
Data arc
13 days
First observed
9 December 2025
Last observed
22 December 2025
Residual RMS
0.81 ″
Solution · Otto Matic
23 December 2025

Visual & observation

Absolute magnitude (H)
26.3

Discovery & classification

Aten Near-Earth Object

Close approaches 27 on record

Flyby geometry
Ecliptic flyby of 2025 XU4 at 2035-03-21 07:18 UTC Top-down view of the ecliptic, Earth at the centre, for the 2035-03-21 07:18 UTC close approach of 2025 XU4. Catalogue miss distance 21.2 LD · 8.15 × 10⁶ km. The curve is the geocentric path from 2035-03-18 to 2035-03-24, 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 north of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 21.2 LD · 8.15 × 10⁶ km 2035-03-21 07:18 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2035-03-21 07:18 UTC close approach of 2025 XU4. Catalogue miss distance 21.2 LD · 8.15 × 10⁶ km. The curve is the geocentric path from 2035-03-18 to 2035-03-24, 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 north 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
2035-03-21 07:18:00 Earth 0.0545 AU 21.2 LD 6.7 km/s
2040-11-02 19:36:00 Venus 0.1044 AU 40.6 LD 5.6 km/s
2043-02-12 22:14:00 Earth 0.0957 AU 37.2 LD 4.3 km/s
2050-08-18 20:28:00 Venus 0.0954 AU 37.1 LD 5.2 km/s
2050-12-05 09:00:00 Earth 0.0557 AU 21.7 LD 4.1 km/s
2058-09-07 09:28:00 Venus 0.1221 AU 47.5 LD 6.6 km/s
2058-11-27 20:29:00 Earth 0.1018 AU 39.6 LD 8.3 km/s
2060-03-18 02:10:00 Earth 0.1711 AU 66.6 LD 10.5 km/s
2068-03-17 18:58:00 Earth 0.033 AU 12.9 LD 4.8 km/s
2068-06-20 10:43:00 Venus 0.1046 AU 40.7 LD 5.6 km/s

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

Sources