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392498 (2011 OR20)
Classification: Main-belt Asteroid          SPK-ID: 2392498
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2276824072176671 4.9997e-08  
a 2.246425036983107 1.9996e-08 au
q 1.734953576928756 1.0982e-07 au
i 5.546554767805408 5.8115e-06 deg
node 116.9116496581373 6.0339e-05 deg
peri 155.1652394963423 6.2749e-05 deg
M 245.7065036370312 2.3257e-05 deg
tp 2459390.940931983702
(2021-Jun-25.44093198)
8.3819e-05 TDB
period 1229.805194407141
3.37
1.642e-05
4.496e-08
d
yr
n .2927292888639547 3.9085e-09 deg/d
Q 2.757896497037457 2.4549e-08 au
  Orbit Determination Parameters
   # obs. used (total)      141  
   data-arc span      5761 days (15.77 yr)  
   first obs. used      2004-04-16  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58155  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 04:44:19  

Additional Information
 Earth MOID = .720535 au 
 Jupiter MOID = 2.3627 au 
 T_jup = 3.590 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.7   n/a MPO455786  

392498 (2011 OR20)          Discovered 2004-Apr-16 by LINEAR at Socorro
Reference: Last Updated: 2014-04-17

Alternate Designations
 2011 OR20 = 2004 HX33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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