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212221 (2005 JU9)
Classification: Main-belt Asteroid          SPK-ID: 2212221
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1378741770899254 9.1865e-08  
a 2.61008577884554 2.8892e-08 au
q 2.250222349953094 2.502e-07 au
i 5.98516630258965 8.2874e-06 deg
node 33.99799803447286 6.3425e-05 deg
peri 146.0223124396855 6.9198e-05 deg
M 325.2586942921212 3.7607e-05 deg
tp 2459545.136076721841
(2021-Nov-26.63607672)
0.00016283 TDB
period 1540.212335995419
4.22
2.5574e-05
7.002e-08
d
yr
n .2337340064007063 3.881e-09 deg/d
Q 2.969949207737986 3.2876e-08 au
  Orbit Determination Parameters
   # obs. used (total)      177  
   data-arc span      9588 days (26.25 yr)  
   first obs. used      1994-10-08  
   last obs. used      2021-01-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61208  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:37:47  

Additional Information
 Earth MOID = 1.25657 au 
 Jupiter MOID = 1.98949 au 
 T_jup = 3.389 
[ 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 17.00   n/a MPCxxxxx  

212221 (2005 JU9)          Discovered 2005-May-04 by Veillet, C. at Mauna Kea
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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