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186966 (2004 RA144)
Classification: Main-belt Asteroid          SPK-ID: 2186966
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1799619746398294 4.293e-08  
a 3.019396158071893 2.3938e-08 au
q 2.47601966324536 1.2097e-07 au
i 9.001583551421435 4.1409e-06 deg
node 161.536486441852 2.8845e-05 deg
peri 161.6941700079225 3.1667e-05 deg
M 108.6297741160822 1.4926e-05 deg
tp 2458818.237606154655
(2019-Nov-30.73760615)
7.5766e-05 TDB
period 1916.366516254266
5.25
2.2789e-05
6.239e-08
d
yr
n .1878555051690513 2.234e-09 deg/d
Q 3.562772652898425 2.8245e-08 au
  Orbit Determination Parameters
   # obs. used (total)      567  
   data-arc span      6914 days (18.93 yr)  
   first obs. used      2002-03-05  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48374  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 02:46:18  

Additional Information
 Earth MOID = 1.46527 au 
 Jupiter MOID = 1.81479 au 
 T_jup = 3.204 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457631.5 (2016-Aug-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .182570441247375 4.2703e-08  
q 2.465393913976669 1.2047e-07 au
tp 2456905.357299216497
(2014-Sep-04.85729922)
6.6698e-05 TDB
node 161.6854950508928 2.8818e-05 deg
peri 161.8806011626256 3.1588e-05 deg
i 9.010063158921906 4.1465e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      567  
   data-arc span      6914 days (18.93 yr)  
   first obs. used      2002-03-05  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48374  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 02:46:18  

Additional Information
 Jupiter MOID = 1.81479 au 
 T_jup = 3.204 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.823510506248388E-15 -5.093931844770847E-15 5.745654260637693E-13 -7.681162072720621E-15 8.595848890494974E-14 -1.940063016476324E-15
q -5.093931844770847E-15 1.45118787941278E-14 -1.457965453110629E-12 2.167679584843807E-14 -1.908617224366042E-13 5.604710892601854E-15
tp 5.745654260637693E-13 -1.457965453110629E-12 4.448641285938558E-9 -5.023207396306383E-12 8.880101120809688E-10 -5.993107838790762E-12
node -7.681162072720621E-15 2.167679584843807E-14 -5.023207396306383E-12 8.304534043901068E-10 -8.205374757986033E-10 1.77423691982103E-11
peri 8.595848890494974E-14 -1.908617224366042E-13 8.880101120809688E-10 -8.205374757986033E-10 9.97803299012724E-10 -1.870452097709113E-11
i -1.940063016476324E-15 5.604710892601854E-15 -5.993107838790762E-12 1.77423691982103E-11 -1.870452097709113E-11 1.719310573839011E-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 15.32   n/a MPCxxxxx  

186966 (2004 RA144)          Discovered 2004-Sep-08 by LINEAR at Socorro
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

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