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Asteroid Near-Earth

2025 UA

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(2025 UA)

Where is it now

Distance from Sun
0.745 AU
True anomaly
283.79°
Distance from Earth
1.279 AU
As of
19 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 UA — 0.745 AU from the Sun 2025 UA
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2025 UA is 1.279 AU from Earth today (10.6 light-minutes).

In the sky

Right ascension
11h 25m 56s
Declination
+02° 56′ 56″
Constellation
Leo
Distance from Earth
1.28 AU
Elongation from the Sun
35.51° — 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
0.831 AU
Eccentricity
0.2322
Inclination
1.15°
Orbital period
276.7 days
Perihelion
0.638 AU
Aphelion
1.024 AU
Longitude of ascending node
210.77°
Argument of periapsis
345.19°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 1.5 LD
0.004 AU
Tisserand (Jupiter)
7.038

Orbit quality

Orbit poorly determined (uncertainty code 6).

Observations used
46
Data arc
12 days
First observed
16 October 2025
Last observed
28 October 2025
Residual RMS
0.59 ″
Solution · Otto Matic
12 November 2025

Visual & observation

Absolute magnitude (H)
27.48

Discovery & classification

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

Aten Near-Earth Object

Close approaches 34 on record

Flyby geometry
Ecliptic flyby of 2025 UA at 2028-09-10 05:13 UTC Top-down view of the ecliptic, Earth at the centre, for the 2028-09-10 05:13 UTC close approach of 2025 UA. Catalogue miss distance 39.5 LD · 1.52 × 10⁷ km. The curve is the geocentric path from 2028-09-07 to 2028-09-13, 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 39.5 LD · 1.52 × 10⁷ km 2028-09-10 05:13 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2028-09-10 05:13 UTC close approach of 2025 UA. Catalogue miss distance 39.5 LD · 1.52 × 10⁷ km. The curve is the geocentric path from 2028-09-07 to 2028-09-13, 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
2028-09-10 05:13:00 Earth 0.1015 AU 39.5 LD 8 km/s
2034-07-20 09:50:00 Venus 0.0602 AU 23.4 LD 6 km/s
2037-06-03 05:20:00 Venus 0.0999 AU 38.9 LD 11.7 km/s
2044-06-05 04:23:00 Venus 0.021 AU 8.2 LD 7.1 km/s
2047-04-08 04:19:00 Venus 0.0807 AU 31.4 LD 10.6 km/s
2047-11-13 02:10:00 Earth 0.0929 AU 36.2 LD 7.6 km/s
2053-09-10 17:32:00 Earth 0.0628 AU 24.5 LD 6.6 km/s
2054-03-24 09:02:00 Venus 0.0654 AU 25.4 LD 6 km/s
2057-02-07 06:13:00 Venus 0.1191 AU 46.4 LD 12.7 km/s
2066-12-13 06:01:00 Venus 0.0993 AU 38.6 LD 11.6 km/s

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

Sources