2026 JJ12 is a trans-Neptunian object in the Trans-Neptunian object orbit class. Its orbit takes it from 38.39 AU to 55.88 AU from the Sun; one orbit takes 323.6 years.
Where is it now
- Distance from Sun
- 55.854 AU
- True anomaly
- 176.31°
- Distance from Earth
- 56.787 AU
- As of
- 24 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.
In the sky
- Right ascension
- 14h 40m 33s
- Declination
- -29° 11′ 12″
- Constellation
- Hydra
- Distance from Earth
- 56.79 AU
- Elongation from the Sun
- 19.32° — too close to the Sun to observe
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
- 47.134 AU
- Eccentricity
- 0.1856
- Inclination
- 13.49°
- Orbital period
- 323.6 years
- Perihelion
- 38.387 AU
- Aphelion
- 55.88 AU
- Longitude of ascending node
- 330.31°
- Argument of periapsis
- 80.77°
- Epoch · J2000
- 2461200.5
- Orbit class · TNO
- Trans-Neptunian object
- Tisserand (Jupiter)
- 5.862
Orbit quality
Orbit very uncertain — the object may be effectively lost (uncertainty code 9).
- Observations used
- 14
- Data arc
- 62 days
- First observed
- 12 May 2026
- Last observed
- 13 July 2026
- Residual RMS
- 0.12 ″
Visual & observation
- Absolute magnitude (H)
- 5.62
Discovery & classification
Sources
- visual properties: JPL SBDB (lookup)
- orbital elements: JPL SBDB