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Asteroid Near-Earth

2025 UC1

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(2025 UC1)

Where is it now

Distance from Sun
0.923 AU
True anomaly
248.8°
Distance from Earth
0.863 AU
As of
20 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 — 0.996 AU from the Sun Earth 2025 UC1 — 0.923 AU from the Sun 2025 UC1
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2025 UC1 is 0.863 AU from Earth today (7.2 light-minutes).

In the sky

Right ascension
10h 08m 54s
Declination
+14° 29′ 41″
Constellation
Leo
Distance from Earth
0.86 AU
Elongation from the Sun
58.91° — near the Sun — look low at dusk or dawn

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
0.893 AU
Eccentricity
0.1456
Inclination
3.07°
Orbital period
308.3 days
Perihelion
0.763 AU
Aphelion
1.023 AU
Longitude of ascending node
19.84°
Argument of periapsis
172.01°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 8.1 LD
0.0207 AU
Tisserand (Jupiter)
6.645

Orbit quality

Orbit poorly determined (uncertainty code 7).

Observations used
25
Data arc
4 days
First observed
18 October 2025
Last observed
22 October 2025
Residual RMS
0.45 ″
Solution · Otto Matic
22 October 2025

Visual & observation

Absolute magnitude (H)
28.14

Discovery & classification

Aten Near-Earth Object

Close approaches 17 on record

Flyby geometry
Ecliptic flyby of 2025 UC1 at 2036-06-17 18:29 UTC Top-down view of the ecliptic, Earth at the centre, for the 2036-06-17 18:29 UTC close approach of 2025 UC1. Catalogue miss distance 73.0 LD · 2.81 × 10⁷ km. The curve is the geocentric path from 2036-06-14 to 2036-06-20, 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 73.0 LD · 2.81 × 10⁷ km 2036-06-17 18:29 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2036-06-17 18:29 UTC close approach of 2025 UC1. Catalogue miss distance 73.0 LD · 2.81 × 10⁷ km. The curve is the geocentric path from 2036-06-14 to 2036-06-20, 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
2029-07-02 17:25:00 Venus 0.0817 AU 31.8 LD 1.8 km/s
2036-04-20 03:03:00 Venus 0.0537 AU 20.9 LD 2 km/s
2036-06-17 18:29:00 Earth 0.1875 AU 73.0 LD 4.1 km/s
2036-11-16 12:30:00 Earth 0.092 AU 35.8 LD 5.9 km/s
2041-09-04 13:00:00 Earth 0.1715 AU 66.8 LD 8.4 km/s
2068-09-03 23:42:00 Earth 0.1873 AU 72.9 LD 9 km/s
2101-11-15 04:35:00 Earth 0.07 AU 27.2 LD 5.1 km/s
2108-11-15 18:26:00 Venus 0.0687 AU 26.7 LD 1.9 km/s

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

Sources