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48424 Souchay (1988 XW4)
Classification: Main-belt Asteroid          SPK-ID: 2048424
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05705759391220667 4.5009e-08  
a 2.875919156084683 1.6304e-08 au
q 2.711826128752467 1.2851e-07 au
i 1.568974230362578 5.3266e-06 deg
node 201.2036861412362 0.00013561 deg
peri 213.5588457178834 0.0001425 deg
M 89.11156230801221 4.1902e-05 deg
tp 2458159.544266065813
(2018-Feb-10.04426607)
0.00020785 TDB
period 1781.408159668573
4.88
1.5149e-05
4.148e-08
d
yr
n .2020873195433085 1.7185e-09 deg/d
Q 3.040012183416899 1.7234e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1655  
   data-arc span      11107 days (30.41 yr)  
   first obs. used      1988-12-05  
   last obs. used      2019-05-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4851  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:38:24  

Additional Information
 Earth MOID = 1.72272 au 
 Jupiter MOID = 2.16969 au 
 T_jup = 3.293 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456590.5 (2013-Oct-25.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05719754399712089 4.4236e-08  
q 2.714605207799105 1.2657e-07 au
tp 2456389.173407666582
(2013-Apr-06.67340767)
0.00021391 TDB
node 201.3216192369479 0.00013574 deg
peri 215.9311364575958 0.00014281 deg
i 1.567428646080784 5.3234e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1655  
   data-arc span      11107 days (30.41 yr)  
   first obs. used      1988-12-05  
   last obs. used      2019-05-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4851  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:38:24  

Additional Information
 Jupiter MOID = 2.16969 au 
 T_jup = 3.293 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.956841651423121E-15 -5.557439763937394E-15 -4.269404974791545E-12 -1.239897708791723E-15 -9.176307339142951E-13 6.83516249586528E-17
q -5.557439763937394E-15 1.602094673825321E-14 1.148732221787281E-11 3.814259005981259E-15 2.478787017635856E-12 -2.599001078602058E-16
tp -4.269404974791545E-12 1.148732221787281E-11 4.575539581851E-8 -9.998849398967729E-12 9.505845236355438E-9 -3.793406138361748E-12
node -1.239897708791723E-15 3.814259005981259E-15 -9.998849398967729E-12 1.842560196178094E-8 -1.842033170686588E-8 -4.642965615883468E-11
peri -9.176307339142951E-13 2.478787017635856E-12 9.505845236355438E-9 -1.842033170686588E-8 2.039609707663175E-8 4.56379629501736E-11
i 6.83516249586528E-17 -2.599001078602058E-16 -3.793406138361748E-12 -4.642965615883468E-11 4.56379629501736E-11 2.833835448554598E-11

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 13.7   n/a MPO296493  
diameter diameter 4.957 km 0.216 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.261   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48424 Souchay           Discovered 1988 Dec. 5 by T. Nakamura at Kiso.
Jean Souchay (b. 1959), an astronomer at the Paris Observatory, is a specialist on the nutation of the earth's rotation. He also studies the non-principal axis rotation of minor planets and took part in the compilation of d´Alembert's collected works in 1997. He made the discovery observation of this object with the discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040107/MPCPages.arcLast Updated: 2004-01-07

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Alternate Designations
 1988 XW4 = 1990 EY10 = 1991 JW6 = 1998 XE76 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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