2026 EM139 is a trans-Neptunian object in the Trans-Neptunian object orbit class. Its orbit takes it from 36.34 AU to 58.69 AU from the Sun; one orbit takes 327.6 years.
Where is it now
- Distance from Sun
- 37.28 AU
- True anomaly
- 29.75°
- Distance from Earth
- 38.033 AU
- As of
- 25 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
- 11h 24m 39s
- Declination
- -00° 52′ 02″
- Constellation
- Leo
- Distance from Earth
- 38.03 AU
- Elongation from the Sun
- 40.87° — 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.
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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
- 47.517 AU
- Eccentricity
- 0.2351
- Inclination
- 28.9°
- Orbital period
- 327.6 years
- Perihelion
- 36.345 AU
- Aphelion
- 58.69 AU
- Longitude of ascending node
- 179.21°
- Argument of periapsis
- 321.14°
- Epoch · J2000
- 2461200.5
- Orbit class · TNO
- Trans-Neptunian object
- Tisserand (Jupiter)
- 5.252
Orbit quality
Orbit very uncertain — the object may be effectively lost (uncertainty code 8).
- Observations used
- 16
- Data arc
- 91 days
- First observed
- 8 March 2026
- Last observed
- 7 June 2026
- Residual RMS
- 0.28 ″
Visual & observation
- Absolute magnitude (H)
- 7.53
Discovery & classification
Sources
- orbital elements: JPL SBDB