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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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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1379180183619737 9.1839e-08  
a 2.60983663332143 2.8758e-08 au
q 2.249893136605254 2.5009e-07 au
i 5.985356766164244 8.2874e-06 deg
node 34.00414089994018 6.3424e-05 deg
peri 146.0704024077179 6.9203e-05 deg
M 279.3995340873134 3.7037e-05 deg
tp 2459545.289048298050
(2021-Nov-26.78904830)
0.00016288 TDB
period 1539.991809994745
4.22
2.5454e-05
6.969e-08
d
yr
n .2337674769849772 3.8638e-09 deg/d
Q 2.969780130037607 3.2724e-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 = 1.25491 au 
 Jupiter MOID = 1.99048 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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