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JPL Small-Body Database Browser
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359887 (2011 WN44)
Classification: Main-belt Asteroid          SPK-ID: 2359887
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 .03858983633065109 6.2763e-08  
a 2.958611116609595 4.6675e-08 au
q 2.844438797853586 2.0455e-07 au
i 3.164314080630811 6.8529e-06 deg
node 285.2293541317872 0.00011329 deg
peri 74.30462608075057 0.00014799 deg
M 293.998903089263 0.00010003 deg
tp 2459341.283772740885
(2021-May-06.78377274)
0.00052065 TDB
period 1858.789685762948
5.09
4.3987e-05
1.204e-07
d
yr
n .1936744123110606 4.5831e-09 deg/d
Q 3.072783435365605 4.8476e-08 au
  Orbit Determination Parameters
   # obs. used (total)      136  
   data-arc span      6840 days (18.73 yr)  
   first obs. used      2000-09-03  
   last obs. used      2019-05-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5718  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:45:10  

Additional Information
 Earth MOID = 1.8421 au 
 Jupiter MOID = 2.12442 au 
 T_jup = 3.263 
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Orbital Elements at Epoch 2457149.5 (2015-May-07.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04032976122577181 6.1271e-08  
q 2.835743168220664 1.9883e-07 au
tp 2457502.162197327765
(2016-Apr-23.66219733)
0.00048976 TDB
node 285.2858905332365 0.00011347 deg
peri 77.61258414376677 0.00014694 deg
i 3.162765791927617 6.8485e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      136  
   data-arc span      6840 days (18.73 yr)  
   first obs. used      2000-09-03  
   last obs. used      2019-05-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5718  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:45:10  

Additional Information
 Jupiter MOID = 2.12442 au 
 T_jup = 3.263 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.754144565206176E-15 -1.191268102325477E-14 -1.020959693503712E-11 1.473560725847263E-15 -1.890407346006507E-12 8.297136874787866E-16
q -1.191268102325477E-14 3.953510186935897E-14 3.977425481707819E-11 3.252700498294346E-15 7.344274733281444E-12 -1.240141393118695E-15
tp -1.020959693503712E-11 3.977425481707819E-11 2.398662539509074E-7 -3.321486282667194E-11 4.576296579568366E-8 4.724256764009543E-12
node 1.473560725847263E-15 3.252700498294346E-15 -3.321486282667194E-11 1.287467664804961E-8 -1.286092772620187E-8 1.348996926203112E-10
peri -1.890407346006507E-12 7.344274733281444E-12 4.576296579568366E-8 -1.286092772620187E-8 2.158991587260207E-8 -1.338224247875866E-10
i 8.297136874787866E-16 -1.240141393118695E-15 4.724256764009543E-12 1.348996926203112E-10 -1.338224247875866E-10 4.690181732752732E-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 16.6   n/a MPO437519  

359887 (2011 WN44)          Discovered 2008-Feb-13 by Spacewatch at Kitt Peak
Reference: 20130327/Numbers.arcLast Updated: 2013-03-29

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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