Centaur
2025 OU664
(2025 OU664)
Where is it now
- Distance from Sun
- 3.887 AU
- True anomaly
- 45.38°
- As of
- 17 September 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
- 02h 41m 36s
- Declination
- +16° 41′ 32″
- Constellation
- Aries
- Distance from Earth
- 3.14 AU
- Elongation from the Sun
- 132.42° — well clear of the Sun
Favours the northern hemisphere; low or below the horizon from far south.
From your location
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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
- 6.166 AU
- Eccentricity
- 0.4256
- Inclination
- 6.92°
- Orbital period
- 15.31 years
- Perihelion
- 3.542 AU
- Aphelion
- 8.79 AU
- Longitude of ascending node
- 218.49°
- Argument of periapsis
- 128.13°
- Epoch · J2000
- 2461200.5
- Orbit class · CEN
- Centaur
- Tisserand (Jupiter)
- 2.8
Orbit quality
Orbit very uncertain — the object may be effectively lost (uncertainty code 9).
- Observations used
- 7
- Data arc
- 4 days
- First observed
- 18 July 2025
- Last observed
- 22 July 2025
- Residual RMS
- 0.11 ″
Visual & observation
- Absolute magnitude (H)
- 17.27
Discovery & classification
Centaur
Sources
- orbital elements: JPL SBDB