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JPL Small-Body Database Browser
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277087 (2005 EK204)
Classification: Main-belt Asteroid          SPK-ID: 2277087
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1807360977547398 8.4271e-08  
a 3.190918168652134 4.3691e-08 au
q 2.614204070595247 2.758e-07 au
i 2.190279519095624 8.6856e-06 deg
node 58.95369427197276 0.00021126 deg
peri 180.7936066415243 0.000213 deg
M 132.6424033110696 3.4019e-05 deg
tp 2457833.400307822317
(2017-Mar-20.90030782)
0.00018534 TDB
period 2081.957822615232
5.70
4.276e-05
1.171e-07
d
yr
n .1729141657383766 3.5513e-09 deg/d
Q 3.767632266709021 5.1587e-08 au
  Orbit Determination Parameters
   # obs. used (total)      146  
   data-arc span      9340 days (25.57 yr)  
   first obs. used      1994-05-03  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62502  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 20:09:24  

Additional Information
 Earth MOID = 1.6018 au 
 Jupiter MOID = 1.24691 au 
 T_jup = 3.170 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456764.5 (2014-Apr-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1834560973051739 8.3075e-08  
q 2.6016584267425 2.7151e-07 au
tp 2455757.269857040333
(2011-Jul-14.76985704)
0.00015795 TDB
node 59.03075856636254 0.0002113 deg
peri 181.2451622557751 0.00021302 deg
i 2.191330029917912 8.6861e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      146  
   data-arc span      9340 days (25.57 yr)  
   first obs. used      1994-05-03  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62502  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 20:09:24  

Additional Information
 Jupiter MOID = 1.24691 au 
 T_jup = 3.170 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.901419622571811E-15 -2.236987590299881E-14 -4.819143078788985E-12 -3.394969996256125E-14 -6.023343629271294E-13 -2.000403662160332E-15
q -2.236987590299881E-14 7.371542348287953E-14 1.834060047357381E-11 1.076421593761024E-13 2.501011432040021E-12 8.038730044339126E-15
tp -4.819143078788985E-12 1.834060047357381E-11 2.494681376417851E-8 1.277918825026692E-11 4.334701102532022E-9 8.87297327204046E-12
node -3.394969996256125E-14 1.076421593761024E-13 1.277918825026692E-11 4.464614566350977E-8 -4.461117539777764E-8 -4.29666016458334E-10
peri -6.023343629271294E-13 2.501011432040021E-12 4.334701102532022E-9 -4.461117539777764E-8 4.537831390020368E-8 4.308882813912891E-10
i -2.000403662160332E-15 8.038730044339126E-15 8.87297327204046E-12 -4.29666016458334E-10 4.308882813912891E-10 7.544903310465405E-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 15.9   n/a MPO503246  

277087 (2005 EK204)          Discovered 2005-Mar-11 by Spacewatch at Kitt Peak
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

[ show close-approach data ]
Alternate Designations
 2005 EK204 = 1994 JM4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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