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305504 (2008 ED109)
Classification: Main-belt Asteroid          SPK-ID: 2305504
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .185897493153643 6.4497e-08  
a 3.057752488473789 3.7445e-08 au
q 2.489323966182198 2.1111e-07 au
i 12.20089726138702 6.3926e-06 deg
node 151.7001130329561 3.0316e-05 deg
peri 197.3979268499158 3.3932e-05 deg
M 254.6025603218282 1.765e-05 deg
tp 2459572.280683693611
(2021-Dec-23.78068369)
0.00010087 TDB
period 1952.99854302182
5.35
3.5874e-05
9.822e-08
d
yr
n .1843319347504387 3.386e-09 deg/d
Q 3.62618101076538 4.4406e-08 au
  Orbit Determination Parameters
   # obs. used (total)      204  
   data-arc span      7152 days (19.58 yr)  
   first obs. used      2000-09-23  
   last obs. used      2020-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61067  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 19:59:56  

Additional Information
 Earth MOID = 1.48517 au 
 Jupiter MOID = 1.80114 au 
 T_jup = 3.174 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456988.5 (2014-Nov-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1851674549483805 6.4621e-08  
q 2.492082714826083 2.1151e-07 au
tp 2457620.884063724037
(2016-Aug-20.38406372)
8.7763e-05 TDB
node 151.7161248798993 3.0325e-05 deg
peri 197.8195670740793 3.3954e-05 deg
i 12.19759035210893 6.391e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      204  
   data-arc span      7152 days (19.58 yr)  
   first obs. used      2000-09-23  
   last obs. used      2020-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61067  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 19:59:56  

Additional Information
 Jupiter MOID = 1.80114 au 
 T_jup = 3.174 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.17582720579847E-15 -1.354582823996786E-14 1.084526665806608E-12 8.958737187307901E-15 2.90522089015866E-13 -1.431015446200548E-15
q -1.354582823996786E-14 4.473708820808735E-14 -2.798080959762354E-12 -2.309899296445275E-14 -8.762548423385857E-13 8.61997452394007E-15
tp 1.084526665806608E-12 -2.798080959762354E-12 7.702410618875858E-9 9.381428581215711E-12 1.385287557401152E-9 7.180570563604216E-12
node 8.958737187307901E-15 -2.309899296445275E-14 9.381428581215711E-12 9.196142761894323E-10 -8.966960699721986E-10 6.097316175840252E-11
peri 2.90522089015866E-13 -8.762548423385857E-13 1.385287557401152E-9 -8.966960699721986E-10 1.152852341791329E-9 -5.850418189370232E-11
i -1.431015446200548E-15 8.61997452394007E-15 7.180570563604216E-12 6.097316175840252E-11 -5.850418189370232E-11 4.084543469185116E-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 15.7   n/a MPO471208  

305504 (2008 ED109)          Discovered 2008-Mar-07 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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