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JPL Small-Body Database Browser
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379050 (2008 WE42)
Classification: Main-belt Asteroid          SPK-ID: 2379050
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01523560106991413 1.0111e-07  
a 3.069983336850498 8.2513e-08 au
q 3.02321029543896 3.4974e-07 au
i 4.44535643448235 1.0822e-05 deg
node 35.72699007111068 9.4627e-05 deg
peri 304.4038044547081 0.00041049 deg
M 134.7457819990779 0.00040639 deg
tp 2458265.114381065031
(2018-May-26.61438107)
0.0022177 TDB
period 1964.728089361644
5.38
7.921e-05
2.169e-07
d
yr
n .1832314618746897 7.3872e-09 deg/d
Q 3.116756378262036 8.377e-08 au
  Orbit Determination Parameters
   # obs. used (total)      121  
   data-arc span      6789 days (18.59 yr)  
   first obs. used      2000-03-05  
   last obs. used      2018-10-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64273  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 11:36:09  

Additional Information
 Earth MOID = 2.01698 au 
 Jupiter MOID = 1.92272 au 
 T_jup = 3.226 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457077.5 (2015-Feb-24.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01370773335226896 8.9168e-08  
q 3.029827334121003 3.1427e-07 au
tp 2456234.891720929943
(2012-Nov-03.39172093)
0.0026729 TDB
node 35.8634763923329 9.4819e-05 deg
peri 292.5382978220102 0.00049144 deg
i 4.440912388117514 1.0803e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      121  
   data-arc span      6789 days (18.59 yr)  
   first obs. used      2000-03-05  
   last obs. used      2018-10-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64273  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 11:36:09  

Additional Information
 Jupiter MOID = 1.92272 au 
 T_jup = 3.226 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.950903308715324E-15 -2.722796821553213E-14 1.113345891954703E-10 3.549624377280105E-14 2.00172597535941E-11 5.560919911206091E-15
q -2.722796821553213E-14 9.876637741909832E-14 -3.55750517816201E-10 -9.982630368443856E-14 -6.353961618221717E-11 -1.857766341516313E-14
tp 1.113345891954703E-10 -3.55750517816201E-10 7.144283042914457E-6 2.715618230348666E-9 1.288855015856401E-6 -9.893986935431633E-11
node 3.549624377280105E-14 -9.982630368443856E-14 2.715618230348666E-9 8.990730896311257E-9 -8.470985869853759E-9 -3.575663873189659E-10
peri 2.00172597535941E-11 -6.353961618221717E-11 1.288855015856401E-6 -8.470985869853759E-9 2.415116956342235E-7 3.384881011244396E-10
i 5.560919911206091E-15 -1.857766341516313E-14 -9.893986935431633E-11 -3.575663873189659E-10 3.384881011244396E-10 1.166989116119346E-10

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 16.4   n/a MPO455728  

379050 (2008 WE42)          Discovered 2008-Nov-17 by Spacewatch at Kitt Peak
Reference: Last Updated: 2013-11-20

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1917-Feb-02 23:17 00:12 Jupiter 1.94440945062951 1.94440777557524 1.94441112568953 3.71256743315117 3.59331575387538 2421262.470452053 11.8459284967936 272.071240143999 52.1583684458625 77.9832177990886 1264532.91611878 T 13 CATAB v2.0e-lin.ifort 2019-Jul-14 11:36:11 2019-Jul-14 11:36
1976-Feb-10 06:14 00:05 Jupiter 1.93804222977083 1.93804093103017 1.93804352851172 3.73909645661843 3.62032334406019 2442818.759991734 4.67799532274651 159.999640052772 50.6012126448651 82.6495624834921 1254200.91274654 T 13 CATAB v2.0e-lin.ifort 2019-Jul-14 11:36:11 2019-Jul-14 11:36
2035-Feb-16 16:07 00:03 Jupiter 1.93913938788581 1.93913811901794 1.93914065675402 3.77573707786959 3.6582214050237 2464375.171583310 2.55236495455751 137.815681188992 46.1434264996129 -79.452444113739 1243458.31895074 T 13 CATAB v2.0e-lin.ifort 2019-Jul-14 11:36:11 2019-Jul-14 11:36
2094-Feb-23 15:48 00:10 Jupiter 1.94717158996259 1.94716999652349 1.9471731834236 3.81959008690203 3.70395268325691 2485932.158465213 9.67155414517839 465.035860904457 44.5922858734707 -83.7626527054526 1326668.21316132 T 13 CATAB v2.0e-lin.ifort 2019-Jul-14 11:36:11 2019-Jul-14 11:36
2153-Mar-04 14:07 00:17 Jupiter 1.96144477048927 1.96144222722088 1.96144731386548 3.86867586326505 3.75539357219577 2507490.088442598 16.7734872230596 815.933691032173 42.4871754964166 -82.6037779242154 1430134.12226774 T 13 CATAB v2.0e-lin.ifort 2019-Jul-14 11:36:11 2019-Jul-14 11:36

Alternate Designations
 2008 WE42 = 2000 EW203 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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