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21331 Lodovicoferrari (1997 BO)
Classification: Main-belt Asteroid          SPK-ID: 2021331
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2267086636323082 3.7012e-08  
a 2.57133372136726 1.3173e-08 au
q 1.988390089643398 9.2181e-08 au
i 5.279514575351754 5.3666e-06 deg
node 324.4416383355473 6.5627e-05 deg
peri 317.5788739549923 6.7496e-05 deg
M 213.1477086820693 1.7478e-05 deg
tp 2460010.847819649013
(2023-Mar-07.34781965)
7.4755e-05 TDB
period 1506.038571743009
4.12
1.1574e-05
3.169e-08
d
yr
n .2390377024562891 1.8369e-09 deg/d
Q 3.154277353091121 1.616e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1023  
   data-arc span      8819 days (24.15 yr)  
   first obs. used      1997-01-17  
   last obs. used      2021-03-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49304  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:43:32  

Additional Information
 Earth MOID = .975566 au 
 Jupiter MOID = 2.02721 au 
 T_jup = 3.387 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.08   n/a MPCxxxxx  
diameter diameter 2.788 km 0.129 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.300   0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21331 Lodovicoferrari           Discovered 1997 Jan. 17 by P. G. Comba at Prescott.
Lodovico Ferrari (1522-1565), assistant and protégé of Cardano and lecturer in mathematics in Milan, discovered the solution of the quartic algebraic equation.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010509/MPCPages.arcLast Updated: 2009-05-11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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