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18510 Chasles (1996 SN)
Classification: Main-belt Asteroid          SPK-ID: 2018510
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1389516503624849 4.345e-08  
a 2.661178157634483 1.5113e-08 au
q 2.291403060722575 1.1713e-07 au
i 2.786810799321932 4.3881e-06 deg
node 44.53401493840693 0.00010269 deg
peri 169.3251559924881 0.00010433 deg
M 299.7947328787646 2.0725e-05 deg
tp 2459265.680349721762
(2021-Feb-20.18034972)
9.2072e-05 TDB
period 1585.657376249102
4.34
1.3508e-05
3.698e-08
d
yr
n .2270351750588047 1.934e-09 deg/d
Q 3.030953254546392 1.7213e-08 au
  Orbit Determination Parameters
   # obs. used (total)      675  
   data-arc span      15679 days (42.93 yr)  
   first obs. used      1977-02-18  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59024  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:27:29  

Additional Information
 Earth MOID = 1.28503 au 
 Jupiter MOID = 1.93433 au 
 T_jup = 3.370 
[ 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 15.5   n/a MPO416906  
diameter diameter 5.508 km 1.673 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
geometric albedo albedo 0.033   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

18510 Chasles           Discovered 1996 Sept. 16 by P. G. Comba at Prescott.
Michel Chasles (1793-1880) was professor at the École Polytechnique and later at the Sorbonne. His main contributions were in projective geometry, which he developed with a synthetic approach.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010309/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1996 SN = 1977 DW3 = 1999 GT7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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