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100445 (1996 RA4)
Classification: Main-belt Asteroid          SPK-ID: 2100445
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2073326426160801 4.3027e-08  
a 2.167387406941194 7.8306e-09 au
q 1.718017248287263 9.5325e-08 au
i 5.206552474183549 4e-06 deg
node 240.4287851587058 4.5154e-05 deg
peri 62.94456182302488 4.6294e-05 deg
M 248.9454167520129 8.2013e-06 deg
tp 2459560.031735638634
(2021-Dec-11.53173564)
2.6915e-05 TDB
period 1165.475760157375
3.19
6.3162e-06
1.729e-08
d
yr
n .3088867330465878 1.674e-09 deg/d
Q 2.616757565595125 9.4541e-09 au
  Orbit Determination Parameters
   # obs. used (total)      608  
   data-arc span      9986 days (27.34 yr)  
   first obs. used      1993-10-10  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51694  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:32:12  

Additional Information
 Earth MOID = .708537 au 
 Jupiter MOID = 2.62283 au 
 T_jup = 3.658 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456792.5 (2014-May-15.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2073177140618452 4.2987e-08  
q 1.718088209900229 9.5225e-08 au
tp 2457229.173000404278
(2015-Jul-25.67300040)
2.7046e-05 TDB
node 240.4732930228873 4.5169e-05 deg
peri 62.92862131223232 4.6312e-05 deg
i 5.205123391483128 3.9995e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      608  
   data-arc span      9986 days (27.34 yr)  
   first obs. used      1993-10-10  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51694  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:32:12  

Additional Information
 Jupiter MOID = 2.62283 au 
 T_jup = 3.658 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.847908923311358E-15 -4.08559760557785E-15 8.896662865720126E-14 2.128243391774405E-14 6.399573454203384E-14 -5.539052693971296E-15
q -4.08559760557785E-15 9.067890918420591E-15 -2.357165074610797E-13 -4.766545100680278E-14 -1.592007027473337E-13 1.234267284811277E-14
tp 8.896662865720126E-14 -2.357165074610797E-13 7.314837806132803E-10 -3.209287326426359E-12 2.877012596660694E-10 -2.556182571109808E-13
node 2.128243391774405E-14 -4.766545100680278E-14 -3.209287326426359E-12 2.040230474549305E-9 -2.032505804281732E-9 6.523521304140823E-11
peri 6.399573454203384E-14 -1.592007027473337E-13 2.877012596660694E-10 -2.032505804281732E-9 2.144825446730544E-9 -6.519965102146282E-11
i -5.539052693971296E-15 1.234267284811277E-14 -2.556182571109808E-13 6.523521304140823E-11 -6.519965102146282E-11 1.599584576577323E-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 16.5   n/a MPO449610  

100445 (1996 RA4)          Discovered 1996-Sep-12 by Casulli, V. S. at Colleverde
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1996 RA4 = 2002 JB93 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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