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212938 (2008 UE346)
Classification: Main-belt Asteroid          SPK-ID: 2212938
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02839565324440557 4.1913e-08  
a 2.577585291267924 1.9483e-08 au
q 2.5043930731292 1.0264e-07 au
i 3.191834264949622 5.6493e-06 deg
node 150.136562936474 7.8572e-05 deg
peri 105.8971750843186 0.00019512 deg
M 129.8121097377586 0.00017197 deg
tp 2458455.457081308877
(2018-Dec-02.95708131)
0.00072482 TDB
period 1511.534256127501
4.14
1.7137e-05
4.692e-08
d
yr
n .2381686015653445 2.7003e-09 deg/d
Q 2.650777509406649 2.0036e-08 au
  Orbit Determination Parameters
   # obs. used (total)      328  
   data-arc span      8768 days (24.01 yr)  
   first obs. used      1995-10-25  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54123  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 23:47:26  

Additional Information
 Earth MOID = 1.49154 au 
 Jupiter MOID = 2.33879 au 
 T_jup = 3.424 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456932.5 (2014-Oct-02.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02830627776590636 3.9336e-08  
q 2.50509390741614 9.6618e-08 au
tp 2456955.818012017792
(2014-Oct-25.31801202)
0.00074768 TDB
node 150.2053198280872 7.8594e-05 deg
peri 108.882505095272 0.0001983 deg
i 3.191365130756924 5.6505e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      328  
   data-arc span      8768 days (24.01 yr)  
   first obs. used      1995-10-25  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54123  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 23:47:26  

Additional Information
 Jupiter MOID = 2.33879 au 
 T_jup = 3.424 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.547297583089973E-15 -3.733096784421566E-15 -1.438343103359201E-11 -1.580774384223535E-15 -3.52807473245025E-12 -3.0479399069167E-15
q -3.733096784421566E-15 9.335069169345814E-15 3.003442821611507E-11 2.640136881876267E-15 7.375436665281804E-12 7.120906769718701E-15
tp -1.438343103359201E-11 3.003442821611507E-11 5.590319155921874E-7 1.366404192048748E-10 1.361447791901185E-7 7.829295135932474E-11
node -1.580774384223535E-15 2.640136881876267E-15 1.366404192048748E-10 6.176983307794304E-9 -6.133552988352516E-9 1.635236793508043E-10
peri -3.52807473245025E-12 7.375436665281804E-12 1.361447791901185E-7 -6.133552988352516E-9 3.93242054020881E-8 -1.441635287525121E-10
i -3.0479399069167E-15 7.120906769718701E-15 7.829295135932474E-11 1.635236793508043E-10 -1.441635287525121E-10 3.192816002404665E-11

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 16.4   n/a MPO446191  

212938 (2008 UE346)          Discovered 2008-Oct-31 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

[ show close-approach data ]
Alternate Designations
 2008 UE346 = 2006 KQ76 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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