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186805 (2004 EW61)
Classification: Main-belt Asteroid          SPK-ID: 2186805
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1237128652145379 4.3563e-08  
a 2.365503695285991 1.4733e-08 au
q 2.072860455466584 1.095e-07 au
i 5.702939691365342 6.2594e-06 deg
node 181.5966123850053 4.2949e-05 deg
peri 273.0581384802401 5.0717e-05 deg
M 336.7385649789127 2.9811e-05 deg
tp 2459482.365336377944
(2021-Sep-24.86533638)
0.00011043 TDB
period 1328.874210384588
3.64
1.2415e-05
3.399e-08
d
yr
n .2709060023791212 2.531e-09 deg/d
Q 2.658146935105398 1.6556e-08 au
  Orbit Determination Parameters
   # obs. used (total)      243  
   data-arc span      6587 days (18.03 yr)  
   first obs. used      2002-10-05  
   last obs. used      2020-10-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61733  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:52:46  

Additional Information
 Earth MOID = 1.09893 au 
 Jupiter MOID = 2.50732 au 
 T_jup = 3.531 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.44   n/a MPCxxxxx  

186805 (2004 EW61)          Discovered 2004-Mar-12 by NEAT at Palomar
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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