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186801 (2004 EF54)
Classification: Main-belt Asteroid          SPK-ID: 2186801
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0730446365897718 6.3958e-08  
a 2.582501184999013 2.2744e-08 au
q 2.393863324448105 1.5952e-07 au
i 1.924704113289933 5.21e-06 deg
node 250.1732672092935 0.00020036 deg
peri 265.1542569407051 0.00020401 deg
M 25.45173977736249 4.1832e-05 deg
tp 2459093.329762143150
(2020-Aug-31.82976214)
0.00017551 TDB
period 1515.860446710264
4.15
2.0025e-05
5.483e-08
d
yr
n .2374888801810719 3.1373e-09 deg/d
Q 2.771139045549921 2.4405e-08 au
  Orbit Determination Parameters
   # obs. used (total)      245  
   data-arc span      7711 days (21.11 yr)  
   first obs. used      1998-12-14  
   last obs. used      2020-01-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .66395  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:52:45  

Additional Information
 Earth MOID = 1.40419 au 
 Jupiter MOID = 2.21515 au 
 T_jup = 3.419 
[ 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 16.8   n/a MPO533173  

186801 (2004 EF54)          Discovered 2004-Mar-15 by CINEOS at Campo Imperatore
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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