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441665 (2008 WE135)
Classification: Main-belt Asteroid          SPK-ID: 2441665
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1894798495833989 6.4633e-08  
a 2.417525902713721 2.1434e-08 au
q 1.959453458303555 1.6276e-07 au
i 2.209029477113866 5.8231e-06 deg
node 112.8759974509325 0.00019635 deg
peri 279.7683628090393 0.00019864 deg
M 99.47592764964395 2.2613e-05 deg
tp 2458821.123323182490
(2019-Dec-03.62332318)
8.7555e-05 TDB
period 1372.951294662217
3.76
1.8259e-05
4.999e-08
d
yr
n .262208864509334 3.4871e-09 deg/d
Q 2.875598347123888 2.5495e-08 au
  Orbit Determination Parameters
   # obs. used (total)      136  
   data-arc span      8451 days (23.14 yr)  
   first obs. used      1998-01-29  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42212  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 12:54:50  

Additional Information
 Earth MOID = .965821 au 
 Jupiter MOID = 2.56015 au 
 T_jup = 3.490 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457780.5 (2017-Jan-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1897017306938477 6.5118e-08  
q 1.958556312393205 1.6368e-07 au
tp 2457445.222499379364
(2016-Feb-26.72249938)
9.3452e-05 TDB
node 112.9543805964777 0.00019671 deg
peri 279.0792494123838 0.00019897 deg
i 2.208025212530565 5.8195e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      136  
   data-arc span      8451 days (23.14 yr)  
   first obs. used      1998-01-29  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42212  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 12:54:50  

Additional Information
 Jupiter MOID = 2.56015 au 
 T_jup = 3.490 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.240362445654959E-15 -1.060711059504505E-14 -1.416781259581914E-12 -4.878683288885266E-14 -3.63481450949163E-13 -9.745870089235242E-15
q -1.060711059504505E-14 2.679134239041928E-14 2.7464598910723E-12 1.325423505645368E-13 6.613805051855767E-13 2.463234317287214E-14
tp -1.416781259581914E-12 2.7464598910723E-12 8.733352660389265E-9 -1.791857754632729E-11 2.844496793999283E-9 6.727457479189145E-12
node -4.878683288885266E-14 1.325423505645368E-13 -1.791857754632729E-11 3.869632663559954E-8 -3.867434415011757E-8 4.195316751478476E-10
peri -3.63481450949163E-13 6.613805051855767E-13 2.844496793999283E-9 -3.867434415011757E-8 3.959000728762342E-8 -4.172039100272614E-10
i -9.745870089235242E-15 2.463234317287214E-14 6.727457479189145E-12 4.195316751478476E-10 -4.172039100272614E-10 3.386613958941348E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.8   n/a MPO503571  

441665 (2008 WE135)          Discovered 2008-Nov-18 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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