2025 UU is an asteroid in the Aten orbit class. Its orbit takes it from 0.7 AU to 1.28 AU from the Sun; one orbit takes 361.5 days. Orbit from the JPL solution of 29 October 2025.
Where is it now
- Distance from Sun
- 0.947 AU
- True anomaly
- 262.06°
- Distance from Earth
- 0.082 AU
- As of
- 2 November 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.
In the sky
- Right ascension
- 11h 13m 22s
- Declination
- -50° 18′ 57″
- Constellation
- Centaurus
- Distance from Earth
- 0.09 AU
- Elongation from the Sun
- 53.53° — near the Sun — look low at dusk or dawn
Favours the southern hemisphere; low or below the horizon from far north.
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.
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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
- 0.993 AU
- Eccentricity
- 0.2922
- Inclination
- 18.99°
- Orbital period
- 361.5 days
- Perihelion
- 0.703 AU
- Aphelion
- 1.283 AU
- Longitude of ascending node
- 210.71°
- Argument of periapsis
- 289.61°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 3.4 LD
- 0.0089 AU
- Tisserand (Jupiter)
- 6.029
Orbit quality
Orbit poorly determined (uncertainty code 7).
- Observations used
- 56
- Data arc
- 7 days
- First observed
- 17 October 2025
- Last observed
- 24 October 2025
- Residual RMS
- 0.47 ″
- Solution · Otto Matic
- 29 October 2025
Visual & observation
- Absolute magnitude (H)
- 25.74
Discovery & classification
Close approaches 28 on record
Top-down view of the ecliptic, Earth at the centre, for the 2027-10-22 04:06 UTC close approach of 2025 UU. Catalogue miss distance 47.0 LD · 1.81 × 10⁷ km. The curve is the geocentric path from 2027-10-19 to 2027-10-25, 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.
| When (UTC) | Body | Distance | Lunar distances | Relative speed |
|---|---|---|---|---|
| 2026-10-24 01:18:00 | Earth | 0.0546 AU | 21.3 LD | 13.8 km/s |
| 2027-02-10 02:17:00 | Venus | 0.1145 AU | 44.6 LD | 16.3 km/s |
| 2027-10-22 04:06:00 | Earth | 0.1208 AU | 47.0 LD | 15.4 km/s |
| 2028-10-18 23:33:00 | Earth | 0.1886 AU | 73.4 LD | 17.1 km/s |
| 2054-10-17 15:12:00 | Venus | 0.114 AU | 44.4 LD | 16.3 km/s |
| 2077-07-21 22:02:00 | Venus | 0.1154 AU | 44.9 LD | 14.1 km/s |
| 2082-06-24 23:35:00 | Venus | 0.1441 AU | 56.1 LD | 17.9 km/s |
| 2105-03-29 08:49:00 | Venus | 0.1144 AU | 44.5 LD | 14.1 km/s |
| 2112-10-27 15:40:00 | Earth | 0.1062 AU | 41.3 LD | 10.9 km/s |
| 2113-10-27 09:35:00 | Earth | 0.0438 AU | 17.1 LD | 11.9 km/s |
Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.
Sources
- visual properties: JPL SBDB (lookup)
- orbital elements: JPL SBDB