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136841 (1997 WU50)
Classification: Main-belt Asteroid          SPK-ID: 2136841
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3749245436166594 6.8978e-08  
a 2.747938693121373 1.4783e-08 au
q 1.717669032716283 1.9279e-07 au
i 11.28423834213219 5.8051e-06 deg
node 68.22668356239967 3.0827e-05 deg
peri 304.0687603774142 3.137e-05 deg
M 278.69041851048 6.833e-06 deg
tp 2458976.292588708498
(2020-May-06.79258871)
3.3777e-05 TDB
period 1663.830134859273
4.56
1.3427e-05
3.676e-08
d
yr
n .2163682412390306 1.746e-09 deg/d
Q 3.778208353526464 2.0326e-08 au
  Orbit Determination Parameters
   # obs. used (total)      473  
   data-arc span      7448 days (20.39 yr)  
   first obs. used      1997-11-29  
   last obs. used      2018-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56789  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-07 05:35:34  

Additional Information
 Earth MOID = .747928 au 
 Jupiter MOID = 1.78879 au 
 T_jup = 3.215 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456712.5 (2014-Feb-24.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3792506866529682 6.9118e-08  
q 1.701021544867183 1.9332e-07 au
tp 2457315.219964801669
(2015-Oct-19.71996480)
2.4647e-05 TDB
node 68.3194988975815 3.0958e-05 deg
peri 304.0042057605768 3.1447e-05 deg
i 11.28063660192311 5.8087e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      473  
   data-arc span      7448 days (20.39 yr)  
   first obs. used      1997-11-29  
   last obs. used      2018-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56789  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-07 05:35:34  

Additional Information
 Jupiter MOID = 1.78879 au 
 T_jup = 3.215 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.777300857990223E-15 -1.334871119963286E-14 -3.507229043749935E-13 6.608765684376236E-14 -1.509467214693868E-13 -3.267679860119567E-14
q -1.334871119963286E-14 3.737071231617759E-14 1.057908838450384E-12 -1.82218451201849E-13 4.267896834236229E-13 9.155540603143387E-14
tp -3.507229043749935E-13 1.057908838450384E-12 6.074872451811848E-10 3.692071648207557E-13 1.671427111687815E-10 2.317626459853027E-12
node 6.608765684376236E-14 -1.82218451201849E-13 3.692071648207557E-13 9.583998862039075E-10 -9.399406184947207E-10 -5.851598739227625E-11
peri -1.509467214693868E-13 4.267896834236229E-13 1.671427111687815E-10 -9.399406184947207E-10 9.888877995565443E-10 5.821269272362599E-11
i -3.267679860119567E-14 9.155540603143387E-14 2.317626459853027E-12 -5.851598739227625E-11 5.821269272362599E-11 3.374106792756782E-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 15.3   n/a MPO436675  
diameter diameter 2.176 km 0.522 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
geometric albedo albedo 0.258   0.183 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

136841 (1997 WU50)          Discovered 1997-Nov-29 by LINEAR at Socorro
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Alternate Designations
 1997 WU50 = 2003 AJ78 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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