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Asteroid Near-Earth

2025 UC11

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(2025 UC11)

Where is it now

Distance from Sun
0.994 AU
True anomaly
185.11°
Distance from Earth
0.467 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 2025 UC11 — 0.994 AU from the Sun 2025 UC11
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2025 UC11 is 0.467 AU from Earth today (3.9 light-minutes).

In the sky

Right ascension
09h 07m 57s
Declination
+20° 31′ 42″
Constellation
Cancer
Distance from Earth
0.47 AU
Elongation from the Sun
76.36° — well clear of the Sun

Favours the northern hemisphere; low or below the horizon from far south.

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
0.946 AU
Eccentricity
0.0511
Inclination
5.09°
Orbital period
336.2 days
Perihelion
0.898 AU
Aphelion
0.995 AU
Longitude of ascending node
35.88°
Argument of periapsis
195.52°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 0.4 LD
0.0011 AU
Tisserand (Jupiter)
6.347

Orbit quality

Orbit reasonably well determined (uncertainty code 4).

Observations used
41
First observed
30 October 2025
Last observed
30 October 2025
Residual RMS
0.43 ″
Solution · Otto Matic
1 November 2025

Visual & observation

Absolute magnitude (H)
34.06

Discovery & classification

Aten Near-Earth Object

Close approaches 30 on record

Flyby geometry
Ecliptic flyby of 2025 UC11 at 2037-06-07 16:34 UTC Top-down view of the ecliptic, Earth at the centre, for the 2037-06-07 16:34 UTC close approach of 2025 UC11. Catalogue miss distance 49.1 LD · 1.89 × 10⁷ km. The curve is the geocentric path from 2037-06-04 to 2037-06-10, 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 49.1 LD · 1.89 × 10⁷ km 2037-06-07 16:34 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2037-06-07 16:34 UTC close approach of 2025 UC11. Catalogue miss distance 49.1 LD · 1.89 × 10⁷ km. The curve is the geocentric path from 2037-06-04 to 2037-06-10, 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
2037-06-07 16:34:00 Earth 0.1262 AU 49.1 LD 3.5 km/s
2037-12-20 00:11:00 Earth 0.1917 AU 74.6 LD 6.6 km/s
2048-10-23 08:36:00 Earth 0.0555 AU 21.6 LD 3.9 km/s
2049-03-29 07:16:00 Earth 0.0947 AU 36.8 LD 3.4 km/s
2060-10-21 13:59:00 Earth 0.0788 AU 30.7 LD 4.4 km/s
2061-04-09 01:23:00 Earth 0.0959 AU 37.3 LD 3.5 km/s
2073-06-13 09:17:00 Earth 0.1246 AU 48.5 LD 3.3 km/s
2073-12-23 14:24:00 Earth 0.1639 AU 63.8 LD 5.7 km/s
2085-11-01 01:00:00 Earth 0.0197 AU 7.7 LD 2.8 km/s
2096-10-18 10:22:00 Earth 0.0935 AU 36.4 LD 4.9 km/s

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

Sources