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11872 (1989 WR)
Classification: Main-belt Asteroid          SPK-ID: 2011872
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1812774576894638 2.0009e-08  
a 2.270472176520454 6.5338e-09 au
q 1.858886752606163 4.7633e-08 au
i 6.836839852288213 9.0624e-07 deg
node 25.69288347408223 4.9373e-06 deg
peri 327.8520292070698 5.6236e-06 deg
M 67.65609409936839 5.6948e-06 deg
tp 2458965.657267988341
(2020-Apr-26.15726799)
1.9226e-05 TDB
period 1249.604853038458
3.42
5.394e-06
1.477e-08
d
yr
n .2880910706489715 1.2436e-09 deg/d
Q 2.682057600434745 7.7182e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2020  
   data-arc span      23866 days (65.34 yr)  
   first obs. used      1955-10-24  
   last obs. used      2021-02-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4755  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 22:50:39  

Additional Information
 Earth MOID = .856912 au 
 Jupiter MOID = 2.76323 au 
 T_jup = 3.582 
[ 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 14.33   n/a E2021B10  

11872 (1989 WR)          Discovered 1989-Nov-20 by Ueda, S., Kaneda, H. at Kushiro
Reference: 19991026/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1989 WR = 1972 XN 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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