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186880 (2004 JJ9)
Classification: Main-belt Asteroid          SPK-ID: 2186880
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01060959338836169 4.1326e-08  
a 2.728309437769163 1.7935e-08 au
q 2.699363183996803 1.1126e-07 au
i 7.236805042194595 4.3392e-06 deg
node 91.04957468793421 3.9906e-05 deg
peri 333.8806365415708 0.00027331 deg
M 50.52206558126984 0.00026783 deg
tp 2458969.497083873266
(2020-Apr-29.99708387)
0.0012251 TDB
period 1646.034239670018
4.51
1.6231e-05
4.444e-08
d
yr
n .2187074796646816 2.1566e-09 deg/d
Q 2.757255691541523 1.8125e-08 au
  Orbit Determination Parameters
   # obs. used (total)      386  
   data-arc span      9895 days (27.09 yr)  
   first obs. used      1994-01-08  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50869  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:53:05  

Additional Information
 Earth MOID = 1.71487 au 
 Jupiter MOID = 2.27335 au 
 T_jup = 3.344 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.13   n/a MPCxxxxx  

186880 (2004 JJ9)          Discovered 2004-May-13 by Spacewatch at Kitt Peak
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

[ show close-approach data ]
Alternate Designations
 2004 JJ9 = 2006 WH85 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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