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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 ]

[ hide orbit diagram ]

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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1939256440911721 5.2164e-08  
a 2.29149561746346 1.2994e-08 au
q 1.847115853914761 1.2581e-07 au
i 6.499356106169921 4.1036e-06 deg
node 63.75772658034345 4.3227e-05 deg
peri 280.6014951012002 4.6461e-05 deg
M 23.02359132721131 1.2569e-05 deg
tp 2459119.469682530758
(2020-Sep-26.96968253)
4.4567e-05 TDB
period 1267.001045768671
3.47
1.0777e-05
2.951e-08
d
yr
n .2841355192265002 2.4168e-09 deg/d
Q 2.73587538101216 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56898  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:51:44  

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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1941645707706451 5.219e-08  
q 1.846600226116023 1.2599e-07 au
tp 2457853.278482834173
(2017-Apr-09.77848283)
5.0744e-05 TDB
node 63.77370211506096 4.3201e-05 deg
peri 280.8626029780955 4.6431e-05 deg
i 6.501543915200017 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56898  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:51:44  

Additional Information
 Jupiter MOID = 2.69502 au 
 T_jup = 3.564 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.723766781741252E-15 -6.559897871699768E-15 8.439698375285086E-13 3.743912809407274E-14 2.513284009042887E-13 -1.669177295075952E-14
q -6.559897871699768E-15 1.587363167642447E-14 -2.281809507394283E-12 -8.710283041097616E-14 -6.917738699652084E-13 4.020517981484594E-14
tp 8.439698375285086E-13 -2.281809507394283E-12 2.574953441285912E-9 5.108440408737635E-12 8.84490729708074E-10 -2.348819287993949E-12
node 3.743912809407274E-14 -8.710283041097616E-14 5.108440408737635E-12 1.866364108005608E-9 -1.8521551800438E-9 -1.796519546212875E-11
peri 2.513284009042887E-13 -6.917738699652084E-13 8.84490729708074E-10 -1.8521551800438E-9 2.155833262557171E-9 1.708815054028149E-11
i -1.669177295075952E-14 4.020517981484594E-14 -2.348819287993949E-12 -1.796519546212875E-11 1.708815054028149E-11 1.685096661467745E-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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2025-Jan-30 08:56 < 00:01 Eunom 0.0281720512104717 0.0281689936274146 0.0281751091185816 5.86394628845004 5.86394620347617 2460705.872090840 0.661333851786794 219.176388362806 43.9384632924766 -47.1860083872846 71528.0319962458 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 23:51:45 2021-Apr-13 23:51
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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