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JPL Small-Body Database Browser
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212844 (2007 UU121)
Classification: Main-belt Asteroid          SPK-ID: 2212844
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2214576334680997 8.1771e-08  
a 2.563541459571002 2.2248e-08 au
q 1.995825634637049 2.1619e-07 au
i 4.986823986895401 9.2706e-06 deg
node 18.68649929844778 6.4179e-05 deg
peri 123.84073950 6.6504e-05 deg
M 294.0293584102059 1.3613e-05 deg
tp 2459275.230674404414
(2021-Mar-01.73067440)
5.7158e-05 TDB
period 1499.197831068081
4.10
1.9517e-05
5.343e-08
d
yr
n .2401284157031654 3.126e-09 deg/d
Q 3.131257284504954 2.7175e-08 au
  Orbit Determination Parameters
   # obs. used (total)      267  
   data-arc span      5348 days (14.64 yr)  
   first obs. used      2003-10-21  
   last obs. used      2018-06-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56161  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 09:54:53  

Additional Information
 Earth MOID = 1.01332 au 
 Jupiter MOID = 1.89842 au 
 T_jup = 3.394 
[ 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 16.7   n/a MPO418139  

212844 (2007 UU121)          Discovered 2007-Oct-30 by Spacewatch at Kitt Peak
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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