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17696 Bombelli (1997 EH8)
Classification: Main-belt Asteroid          SPK-ID: 2017696
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08292107347992266 3.6743e-08  
a 3.026827274705522 2.056e-08 au
q 2.775839507848632 1.1305e-07 au
i 9.704388557427441 5.9483e-06 deg
node 352.6031777322134 2.4347e-05 deg
peri 79.46686215088064 4.6337e-05 deg
M 240.8235970016846 4.1167e-05 deg
tp 2459637.248099713229
(2022-Feb-26.74809971)
0.00022271 TDB
period 1923.445498686537
5.27
1.9598e-05
5.366e-08
d
yr
n .1871641282510126 1.907e-09 deg/d
Q 3.277815041562412 2.2265e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1492  
   data-arc span      10914 days (29.88 yr)  
   first obs. used      1989-09-30  
   last obs. used      2019-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51099  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:09:42  

Additional Information
 Earth MOID = 1.81083 au 
 Jupiter MOID = 1.96271 au 
 T_jup = 3.217 
[ show covariance matrix ]

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 13.2   n/a MPO347662  
diameter diameter 7.793 km 0.227 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.183   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17696 Bombelli           Discovered 1997 Mar. 8 by P. G. Comba at Prescott.
Rafael Bombelli (1526-1572) was a mathematician of Bologna. His widely read treatise on algebra introduced a consistent procedure for handling imaginary complex numbers, removing some of the mystery from the so-called irreducible case of the solution of the cubic equation.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010109/MPCPages.arcLast Updated: 2009-05-11

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Alternate Designations
 1997 EH8 = 1989 SA12 = 1999 NZ63 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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