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212728 (2007 RK162)
Classification: Main-belt Asteroid          SPK-ID: 2212728
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1597620134153149 4.4757e-08  
a 2.342017521716226 1.5709e-08 au
q 1.967852086992896 1.0564e-07 au
i 3.402852280993879 4.769e-06 deg
node 135.6116393819627 7.2963e-05 deg
peri 198.5809492267825 7.4254e-05 deg
M 225.2560274318295 1.6904e-05 deg
tp 2459490.493685310760
(2021-Oct-02.99368531)
6.459e-05 TDB
period 1309.132596804131
3.58
1.3171e-05
3.606e-08
d
yr
n .2749912429641091 2.7667e-09 deg/d
Q 2.716182956439556 1.8218e-08 au
  Orbit Determination Parameters
   # obs. used (total)      350  
   data-arc span      6118 days (16.75 yr)  
   first obs. used      2003-07-23  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56258  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 08:49:28  

Additional Information
 Earth MOID = .958036 au 
 Jupiter MOID = 2.63737 au 
 T_jup = 3.544 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457473.5 (2016-Mar-26.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1597091129189724 4.4852e-08  
q 1.968688566620642 1.0589e-07 au
tp 2456869.603642534019
(2014-Jul-31.10364253)
5.1091e-05 TDB
node 135.6517150260091 7.2897e-05 deg
peri 198.1794882249878 7.4184e-05 deg
i 3.403554686800478 4.7717e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      350  
   data-arc span      6118 days (16.75 yr)  
   first obs. used      2003-07-23  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56258  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 08:49:28  

Additional Information
 Jupiter MOID = 2.63737 au 
 T_jup = 3.544 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.011692623736719E-15 -4.712104677165728E-15 4.985011108498747E-13 1.430889264770753E-14 8.840225730456598E-14 -1.667926704695052E-16
q -4.712104677165728E-15 1.121293176790759E-14 -9.485794606784833E-13 -3.427570396425338E-14 -1.331756712555215E-13 5.054436739806606E-16
tp 4.985011108498747E-13 -9.485794606784833E-13 2.61031397681201E-9 4.094250561069162E-12 7.152242825612377E-10 -8.373934245493646E-13
node 1.430889264770753E-14 -3.427570396425338E-14 4.094250561069162E-12 5.313991222453465E-9 -5.303637248337953E-9 7.259535622691882E-11
peri 8.840225730456598E-14 -1.331756712555215E-13 7.152242825612377E-10 -5.303637248337953E-9 5.503323710447306E-9 -7.267085005433745E-11
i -1.667926704695052E-16 5.054436739806606E-16 -8.373934245493646E-13 7.259535622691882E-11 -7.267085005433745E-11 2.276894516762823E-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 16.9   n/a MPO418139  

212728 (2007 RK162)          Discovered 2007-Sep-13 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

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