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JPL Small-Body Database Browser
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48258 (2001 WA31)
Classification: Main-belt Asteroid          SPK-ID: 2048258
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0543698351111964 7.4988e-08  
a 2.536894909975622 1.2587e-08 au
q 2.398964352025814 1.9326e-07 au
i 4.591697963043315 4.2185e-06 deg
node 125.6007748676804 6.5852e-05 deg
peri 49.76238691619896 7.6538e-05 deg
M 97.34666267599394 3.804e-05 deg
tp 2458601.410125727088
(2019-Apr-27.91012573)
0.00015572 TDB
period 1475.883721010997
4.04
1.0984e-05
3.007e-08
d
yr
n .2439216551242913 1.8154e-09 deg/d
Q 2.67482546792543 1.3272e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1033  
   data-arc span      9253 days (25.33 yr)  
   first obs. used      1994-01-08  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54153  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:37:24  

Additional Information
 Earth MOID = 1.4067 au 
 Jupiter MOID = 2.29032 au 
 T_jup = 3.441 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456870.5 (2014-Aug-01.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05519307778487868 7.4276e-08  
q 2.396263380086126 1.9202e-07 au
tp 2457122.606405311345
(2015-Apr-10.10640531)
0.00015549 TDB
node 125.6303395902283 6.5884e-05 deg
peri 48.69759717701264 7.662e-05 deg
i 4.590656046243521 4.2162e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1033  
   data-arc span      9253 days (25.33 yr)  
   first obs. used      1994-01-08  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54153  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:37:24  

Additional Information
 Jupiter MOID = 2.29032 au 
 T_jup = 3.441 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.51698805585947E-15 -1.42357807115817E-14 4.867466796477643E-12 1.238736937645547E-13 1.318269950850783E-12 3.318753971195922E-15
q -1.42357807115817E-14 3.687018245434416E-14 -1.237458476849687E-11 -3.200834315196852E-13 -3.362468006643249E-12 -8.396879501069501E-15
tp 4.867466796477643E-12 -1.237458476849687E-11 2.417806994543285E-8 1.272631953108374E-10 6.120098494628123E-9 9.118957555516114E-12
node 1.238736937645547E-13 -3.200834315196852E-13 1.272631953108374E-10 4.340702860451527E-9 -4.289497279048828E-9 9.743142831007146E-11
peri 1.318269950850783E-12 -3.362468006643249E-12 6.120098494628123E-9 -4.289497279048828E-9 5.870610445994496E-9 -9.472667080205162E-11
i 3.318753971195922E-15 -8.396879501069501E-15 9.118957555516114E-12 9.743142831007146E-11 -9.472667080205162E-11 1.777637701947265E-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 14.9   n/a MPO337643  
diameter diameter 2.772 km 0.872 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.230   0.142 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48258 (2001 WA31)          Discovered 2001-Nov-17 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 WA31 = 2000 QH10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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