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216771 (2005 WC45)
Classification: Outer Main-belt Asteroid          SPK-ID: 2216771
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04348516963285904 6.1373e-08  
a 3.970866850670877 7.4142e-08 au
q 3.798193032079957 2.3197e-07 au
i .7476867290975379 6.037e-06 deg
node 247.7559840529696 0.00049282 deg
peri 282.6376611635087 0.00049871 deg
M 253.0173809674174 7.8358e-05 deg
tp 2460255.389194140870
(2023-Nov-06.88919414)
0.00064292 TDB
period 2890.1901326284
7.91
8.0946e-05
2.216e-07
d
yr
n .1245592793137829 3.4885e-09 deg/d
Q 4.143540669261797 7.7366e-08 au
  Orbit Determination Parameters
   # obs. used (total)      225  
   data-arc span      7167 days (19.62 yr)  
   first obs. used      2001-04-24  
   last obs. used      2020-12-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59659  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:56:13  

Additional Information
 Earth MOID = 2.80467 au 
 Jupiter MOID = .831884 au 
 T_jup = 3.056 
[ show covariance matrix ]

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 15.21   n/a MPCxxxxx  

216771 (2005 WC45)          Discovered 2005-Nov-22 by Spacewatch at Kitt Peak
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09

[ show close-approach data ]
Alternate Designations
 2005 WC45 = 2007 CN9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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