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215678 (2003 WR)
Classification: Main-belt Asteroid          SPK-ID: 2215678
[ 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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1939256453630891 5.2164e-08  
a 2.291495616377655 1.2994e-08 au
q 1.847115850124928 1.2581e-07 au
i 6.499356092156135 4.1036e-06 deg
node 63.75772697108309 4.3227e-05 deg
peri 280.6014951568372 4.6461e-05 deg
M 23.02359110316565 1.2569e-05 deg
tp 2459119.469683376868
(2020-Sep-26.96968338)		 4.4567e-05 TDB
period 1267.001044868134
3.47		 1.0777e-05
2.951e-08		 d
yr
n .2841355194284529 2.4168e-09 deg/d
Q 2.735875382630381 1.5514e-08 au
   Orbit Determination Parameters
   # obs. used (total)      331  
   data-arc span      6853 days (18.76 yr)  
   first obs. used      2002-04-08  
   last obs. used      2021-01-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56893  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 12:46:41  

Additional Information
 Earth MOID = .851633 au 
 Jupiter MOID = 2.69502 au 
 T_jup = 3.564 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457769.5 (2017-Jan-16.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1941645709232702 5.219e-08  
q 1.84660022488311 1.2599e-07 au
tp 2457853.278484217583
(2017-Apr-09.77848422)		 5.0744e-05 TDB
node 63.77370233714597 4.3201e-05 deg
peri 280.8626031450003 4.6431e-05 deg
i 6.501543903294207 4.105e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      331  
   data-arc span      6853 days (18.76 yr)  
   first obs. used      2002-04-08  
   last obs. used      2021-01-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56893  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 12:46:41  

Additional Information
 Jupiter MOID = 2.69502 au 
 T_jup = 3.564 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.723768084668491E-15 -6.559902456144294E-15 8.439719524921136E-13 3.743912854183503E-14 2.513289778227521E-13 -1.669178097188621E-14
q -6.559902456144294E-15 1.587364645533974E-14 -2.28181537114291E-12 -8.710283716977126E-14 -6.917754317718122E-13 4.020520841837008E-14
tp 8.439719524921136E-13 -2.28181537114291E-12 2.574955089374121E-9 5.10841869015379E-12 8.844910490655132E-10 -2.348829076879578E-12
node 3.743912854183503E-14 -8.710283716977126E-14 5.10841869015379E-12 1.866364042518056E-9 -1.85215512129003E-9 -1.796518381019745E-11
peri 2.513289778227521E-13 -6.917754317718122E-13 8.844910490655132E-10 -1.85215512129003E-9 2.155833262230869E-9 1.708813677882213E-11
i -1.669178097188621E-14 4.020520841837008E-14 -2.348829076879578E-12 -1.796518381019745E-11 1.708813677882213E-11 1.685096646857643E-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 17.10   n/a E2021B55  

215678 (2003 WR)          Discovered 2003-Nov-16 by CSS at Catalina
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

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