ISON
365756 ISON (2010 WZ71)
Where is it now
- Distance from Sun
- 4.468 AU
- True anomaly
- 95.31°
- 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
- 14h 04m 09s
- Declination
- -12° 02′ 54″
- Constellation
- Virgo
- Distance from Earth
- 5.23 AU
- Elongation from the Sun
- 37.5° — near the Sun — look low at dusk or dawn
Visible from both hemispheres.
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
- 5.858 AU
- Eccentricity
- 0.5237
- Inclination
- 20.25°
- Orbital period
- 14.18 years
- Perihelion
- 2.79 AU
- Aphelion
- 8.926 AU
- Longitude of ascending node
- 219.29°
- Argument of periapsis
- 266.37°
- Epoch · J2000
- 2461200.5
- Orbit class · CEN
- Centaur
- Earth MOID · 738.2 LD
- 1.897 AU
- Tisserand (Jupiter)
- 2.584
Orbit quality
Orbit very well determined (uncertainty code 0).
- Observations used
- 318
- Data arc
- 17.44 years
- First observed
- 29 October 2008
- Last observed
- 9 April 2026
- Residual RMS
- 0.53 ″
- Solution · Otto Matic
- 7 June 2026
Visual & observation
- Absolute magnitude (H)
- 14.18
Discovery & classification
- Discovered by
- Elenin, L.
- Discovery date
- 4 November 2010
- Discovery site
- Mayhill-ISON 92391
Also known as 365756 · 2010 WZ71
Sources
- orbital elements: JPL SBDB