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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 ]

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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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1893688355050239 6.5058e-08  
a 2.417465909910689 2.201e-08 au
q 1.959673205677809 1.6422e-07 au
i 2.209018745195233 5.8423e-06 deg
node 112.8764799756993 0.00019655 deg
peri 279.7725057050927 0.00019908 deg
M 47.04152562913424 2.3564e-05 deg
tp 2458821.101890521729
(2019-Dec-03.60189052)
9.0646e-05 TDB
period 1372.900188683065
3.76
1.8749e-05
5.133e-08
d
yr
n .262218625190317 3.5811e-09 deg/d
Q 2.875258614143569 2.6178e-08 au
  Orbit Determination Parameters
   # obs. used (total)      132  
   data-arc span      7973 days (21.83 yr)  
   first obs. used      1998-01-29  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41835  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-05 02:10:16  

Additional Information
 Earth MOID = .967184 au 
 Jupiter MOID = 2.55936 au 
 T_jup = 3.490 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457762.5 (2017-Jan-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1897145540361699 6.5482e-08  
q 1.95848469868169 1.6501e-07 au
tp 2457445.212046513129
(2016-Feb-26.71204651)
9.7415e-05 TDB
node 112.9546749111234 0.00019692 deg
peri 279.0724412813874 0.00019941 deg
i 2.208039938855478 5.839e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      132  
   data-arc span      7973 days (21.83 yr)  
   first obs. used      1998-01-29  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41835  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-05 02:10:16  

Additional Information
 Jupiter MOID = 2.55936 au 
 T_jup = 3.490 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.28794262404716E-15 -1.075129820759349E-14 -1.228507951442128E-12 -4.827710401559933E-14 -2.995989031601658E-13 -9.925390864687866E-15
q -1.075129820759349E-14 2.72282226885002E-14 2.174765721038071E-12 1.322985900258033E-13 4.660223096210858E-13 2.510641838233777E-14
tp -1.228507951442128E-12 2.174765721038071E-12 9.489689762002801E-9 -2.791049625854385E-11 3.113558878333433E-9 6.645214331807163E-12
node -4.827710401559933E-14 1.322985900258033E-13 -2.791049625854385E-11 3.877667603073378E-8 -3.87579770743219E-8 4.152688476119871E-10
peri -2.995989031601658E-13 4.660223096210858E-13 3.113558878333433E-9 -3.87579770743219E-8 3.97656562057841E-8 -4.129762237361031E-10
i -9.925390864687866E-15 2.510641838233777E-14 6.645214331807163E-12 4.152688476119871E-10 -4.129762237361031E-10 3.409368052732716E-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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