Centaur
2010 JB20
(2010 JB20)
Where is it now
- Distance from Sun
- 1.937 AU
- True anomaly
- 25.26°
- 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
- 15h 33m 15s
- Declination
- -25° 04′ 57″
- Constellation
- Libra
- Distance from Earth
- 2.2 AU
- Elongation from the Sun
- 61.63° — well clear of the Sun
Favours the southern hemisphere; low or below the horizon from far north.
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
- 6.491 AU
- Eccentricity
- 0.7134
- Inclination
- 7.51°
- Orbital period
- 16.54 years
- Perihelion
- 1.86 AU
- Aphelion
- 11.122 AU
- Longitude of ascending node
- 24.05°
- Argument of periapsis
- 214.87°
- Epoch · J2000
- 2461200.5
- Orbit class · CEN
- Centaur
- Earth MOID · 332.5 LD
- 0.8544 AU
- Tisserand (Jupiter)
- 2.353
Orbit quality
Orbit very well determined (uncertainty code 1).
- Observations used
- 92
- Data arc
- 15.94 years
- First observed
- 3 May 2010
- Last observed
- 12 April 2026
- Residual RMS
- 0.49 ″
- Solution · Otto Matic
- 5 June 2026
Visual & observation
- Absolute magnitude (H)
- 16.93
Discovery & classification
Centaur
Sources
- orbital elements: JPL SBDB