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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05696696538280091 4.3257e-08  
a 2.875550350286745 1.3861e-08 au
q 2.711738973025459 1.2526e-07 au
i 1.569002857518488 5.0675e-06 deg
node 201.2008566138582 0.00011418 deg
peri 213.2727686990012 0.00011889 deg
M 170.2735572832935 3.3725e-05 deg
tp 2458158.087892793651
(2018-Feb-08.58789279)
0.00016531 TDB
period 1781.06550090876
4.88
1.2878e-05
3.526e-08
d
yr
n .2021261990737094 1.4614e-09 deg/d
Q 3.039361727548032 1.465e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1961  
   data-arc span      11516 days (31.53 yr)  
   first obs. used      1988-12-05  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46919  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 21:48:52  

Additional Information
 Earth MOID = 1.72302 au 
 Jupiter MOID = 2.16931 au 
 T_jup = 3.293 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457141.5 (2015-Apr-29.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05747619844015558 4.2947e-08  
q 2.710270654611202 1.2433e-07 au
tp 2456382.742528235354
(2013-Mar-31.24252824)
0.00016318 TDB
node 201.2212284159078 0.0001142 deg
peri 214.5284405354753 0.00011893 deg
i 1.56871362598433 5.0677e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1961  
   data-arc span      11516 days (31.53 yr)  
   first obs. used      1988-12-05  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46919  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 21:48:52  

Additional Information
 Jupiter MOID = 2.16931 au 
 T_jup = 3.293 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.844469299543433E-15 -5.309931600045014E-15 -2.708072587027501E-12 -5.852669999454016E-15 -5.800543620441388E-13 3.646252630766693E-17
q -5.309931600045014E-15 1.545766739544566E-14 8.095508095815498E-12 1.755453466497273E-14 1.742451221962968E-12 4.159290399026411E-17
tp -2.708072587027501E-12 8.095508095815498E-12 2.662915873609628E-8 -1.28132759433989E-12 5.425151521180425E-9 -1.878065999034889E-12
node -5.852669999454016E-15 1.755453466497273E-14 -1.28132759433989E-12 1.304203333418948E-8 -1.303680513978268E-8 6.138354618561622E-11
peri -5.800543620441388E-13 1.742451221962968E-12 5.425151521180425E-9 -1.303680513978268E-8 1.414536413739637E-8 -6.171147741347597E-11
i 3.646252630766693E-17 4.159290399026411E-17 -1.878065999034889E-12 6.138354618561622E-11 -6.171147741347597E-11 2.568143889408586E-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

[ show close-approach data ]
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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