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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2073326429957927 4.2996e-08  
a 2.167387407035766 7.821e-09 au
q 1.718017247539243 9.5271e-08 au
i 5.206552603445052 3.9932e-06 deg
node 240.4287866951362 4.5072e-05 deg
peri 62.94456015408513 4.621e-05 deg
M 248.9454168020216 8.1996e-06 deg
tp 2459560.031735500266
(2021-Dec-11.53173550)
2.6911e-05 TDB
period 1165.475760233657
3.19
6.3084e-06
1.727e-08
d
yr
n .3088867330263707 1.6719e-09 deg/d
Q 2.616757566532289 9.4425e-09 au
  Orbit Determination Parameters
   # obs. used (total)      612  
   data-arc span      10022 days (27.44 yr)  
   first obs. used      1993-10-10  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51562  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 08:31:39  

Additional Information
 Earth MOID = .708537 au 
 Jupiter MOID = 2.62283 au 
 T_jup = 3.658 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456796.5 (2014-May-19.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2073250931591452 4.2958e-08  
q 1.718058331960188 9.5173e-08 au
tp 2457229.172930532731
(2015-Jul-25.67293053)
2.7023e-05 TDB
node 240.4728518214822 4.5087e-05 deg
peri 62.93064369682644 4.6228e-05 deg
i 5.205126622333447 3.9927e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      612  
   data-arc span      10022 days (27.44 yr)  
   first obs. used      1993-10-10  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51562  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 08:31:39  

Additional Information
 Jupiter MOID = 2.62283 au 
 T_jup = 3.658 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.845347375145352E-15 -4.080533692287235E-15 9.06325119660421E-14 2.134083453069324E-14 6.474507570657863E-14 -5.525172256489578E-15
q -4.080533692287235E-15 9.057867204105802E-15 -2.389444365149036E-13 -4.78106937042214E-14 -1.606246608903777E-13 1.231391783613803E-14
tp 9.06325119660421E-14 -2.389444365149036E-13 7.302678050262229E-10 -3.022790162040582E-12 2.869434727944411E-10 -2.459540778218912E-13
node 2.134083453069324E-14 -4.78106937042214E-14 -3.022790162040582E-12 2.032819582655045E-9 -2.025044479113292E-9 6.460249475921514E-11
peri 6.474507570657863E-14 -1.606246608903777E-13 2.869434727944411E-10 -2.025044479113292E-9 2.137044237965083E-9 -6.456574018797615E-11
i -5.525172256489578E-15 1.231391783613803E-14 -2.459540778218912E-13 6.460249475921514E-11 -6.456574018797615E-11 1.594202712964832E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.52   n/a MPCxxxxx  

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

Alternate Designations
 1996 RA4 = 2002 JB93 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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