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287432 (2002 WP28)
Classification: Main-belt Asteroid          SPK-ID: 2287432
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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1863049696656614 5.7781e-08  
a 3.188771719832038 3.3248e-08 au
q 2.594687701298012 1.8996e-07 au
i 4.17236518566698 7.7792e-06 deg
node 165.0381644867061 8.1584e-05 deg
peri 251.6053543506185 8.4644e-05 deg
M 96.6619057639801 2.0474e-05 deg
tp 2458838.047262609608
(2019-Dec-20.54726261)
0.00011609 TDB
period 2079.857456477519
5.69
3.2529e-05
8.906e-08
d
yr
n .1730887849447635 2.7071e-09 deg/d
Q 3.782855738366065 3.9442e-08 au
  Orbit Determination Parameters
   # obs. used (total)      127  
   data-arc span      6700 days (18.34 yr)  
   first obs. used      2002-11-14  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .65279  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 11:37:22  

Additional Information
 Earth MOID = 1.60994 au 
 Jupiter MOID = 1.60144 au 
 T_jup = 3.166 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457685.5 (2016-Oct-24.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1844829323363796 5.7448e-08  
q 2.60121829148438 1.8803e-07 au
tp 2456759.417715425817
(2014-Apr-11.91771543)
0.00011623 TDB
node 165.0718414209439 8.1549e-05 deg
peri 251.7391571210114 8.4693e-05 deg
i 4.171932251637987 7.7792e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      127  
   data-arc span      6700 days (18.34 yr)  
   first obs. used      2002-11-14  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .65279  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 11:37:22  

Additional Information
 Jupiter MOID = 1.60144 au 
 T_jup = 3.166 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.300239076352411E-15 -1.069227917697024E-14 -9.951768908379042E-13 1.241125547948753E-14 -3.614297052145161E-13 -4.272647118735493E-15
q -1.069227917697024E-14 3.535712983181155E-14 2.820431247684055E-12 -4.030341907915469E-14 1.166388939831932E-12 1.438714689209929E-14
tp -9.951768908379042E-13 2.820431247684055E-12 1.350863467746234E-8 -1.758874002042268E-12 2.647638512229759E-9 -5.74786153268911E-14
node 1.241125547948753E-14 -4.030341907915469E-14 -1.758874002042268E-12 6.65018984760769E-9 -6.633508023223388E-9 -5.775991772842561E-11
peri -3.614297052145161E-13 1.166388939831932E-12 2.647638512229759E-9 -6.633508023223388E-9 7.172964787142638E-9 5.790141430410427E-11
i -4.272647118735493E-15 1.438714689209929E-14 -5.74786153268911E-14 -5.775991772842561E-11 5.790141430410427E-11 6.051599271620663E-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 16.91   n/a MPCxxxxx  

287432 (2002 WP28)          Discovered 2002-Nov-24 by NEAT at Palomar
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

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Alternate Designations
 2002 WP28 = 2007 RZ65 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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