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18596 Superbus (1998 BA4)
Classification: Main-belt Asteroid          SPK-ID: 2018596
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1150861626359608 3.5249e-08  
a 2.374302829769031 7.7819e-09 au
q 2.10105342815521 8.4963e-08 au
i 3.348510612116954 3.8869e-06 deg
node 124.9438195973111 5.598e-05 deg
peri 13.25434389395504 5.7919e-05 deg
M 27.98841658259194 1.4004e-05 deg
tp 2458896.608881809331
(2020-Feb-17.10888181)		 5.1979e-05 TDB
period 1336.295765009558
3.66		 6.5696e-06
1.799e-08		 d
yr
n .2694014374859783 1.3245e-09 deg/d
Q 2.647552231382852 8.6775e-09 au
   Orbit Determination Parameters
   # obs. used (total)      930  
   data-arc span      10680 days (29.24 yr)  
   first obs. used      1991-03-15  
   last obs. used      2020-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54709  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:14:01  

Additional Information
 Earth MOID = 1.1147 au 
 Jupiter MOID = 2.36776 au 
 T_jup = 3.531 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457197.5 (2015-Jun-24.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1149609706132067 3.5334e-08  
q 2.101395125246478 8.5139e-08 au
tp 2457561.692952581082
(2016-Jun-22.19295258)		 5.2349e-05 TDB
node 124.9742071130477 5.5969e-05 deg
peri 13.64238114259154 5.7904e-05 deg
i 3.348713668194298 3.8876e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      930  
   data-arc span      10680 days (29.24 yr)  
   first obs. used      1991-03-15  
   last obs. used      2020-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54709  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:14:01  

Additional Information
 Jupiter MOID = 2.36776 au 
 T_jup = 3.531 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.248507871185957E-15 -2.998691883440102E-15 1.5149552161822E-14 -1.860387169507823E-15 1.895418064660776E-15 -6.292610970467214E-16
q -2.998691883440102E-15 7.248675177296005E-15 -8.363419358550694E-14 4.095011510801561E-15 -2.133965054522813E-14 1.589090853430623E-15
tp 1.5149552161822E-14 -8.363419358550694E-14 2.740394419827376E-9 -7.115360162421492E-13 7.857214198682456E-10 -1.006620175132349E-12
node -1.860387169507823E-15 4.095011510801561E-15 -7.115360162421492E-13 3.132527648573441E-9 -3.126863606117356E-9 2.396495385712688E-11
peri 1.895418064660776E-15 -2.133965054522813E-14 7.857214198682456E-10 -3.126863606117356E-9 3.352905467089269E-9 -2.420484970799759E-11
i -6.292610970467214E-16 1.589090853430623E-15 -1.006620175132349E-12 2.396495385712688E-11 -2.420484970799759E-11 1.511328519905036E-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 15.9   n/a MPO412324  
diameter diameter 3.309 km 1.127 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.064   0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18596 Superbus           Discovered 1998 Jan. 21 by V. S. Casulli at Colleverde di Guidonia.
Tarquinius Superbus, seventh and last king of Rome, reigned from 534 to 509 B.C. He placed under the dominion of Rome many cities of the Latium region.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020624/MPCPages.arcLast Updated: 2003-10-02
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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