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245321 (2005 EU81)
Classification: Main-belt Asteroid          SPK-ID: 2245321
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06475474809124798 5.1677e-08  
a 2.707849790047493 2.3779e-08 au
q 2.532503659024028 1.4478e-07 au
i .873649893565578 5.2228e-06 deg
node 283.5538114996628 0.0004539 deg
peri 158.8696584658908 0.00045705 deg
M 228.9584204914403 5.4027e-05 deg
tp 2459592.936625485013
(2022-Jan-13.43662548)
0.00024662 TDB
period 1627.55352899782
4.46
2.1438e-05
5.869e-08
d
yr
n .2211908816428749 2.9135e-09 deg/d
Q 2.883195921070957 2.5318e-08 au
  Orbit Determination Parameters
   # obs. used (total)      191  
   data-arc span      7090 days (19.41 yr)  
   first obs. used      2000-01-03  
   last obs. used      2019-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6131  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 09:42:01  

Additional Information
 Earth MOID = 1.54843 au 
 Jupiter MOID = 2.2519 au 
 T_jup = 3.361 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457347.5 (2015-Nov-21.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06630408081342012 5.2484e-08  
q 2.526718602428162 1.4779e-07 au
tp 2457958.107195851365
(2017-Jul-23.60719585)
0.00023233 TDB
node 283.6678403738704 0.00045495 deg
peri 157.1673331374954 0.00045788 deg
i .8726058709441431 5.221e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      191  
   data-arc span      7090 days (19.41 yr)  
   first obs. used      2000-01-03  
   last obs. used      2019-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6131  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 09:42:01  

Additional Information
 Jupiter MOID = 2.2519 au 
 T_jup = 3.361 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.754621662764465E-15 -7.673520878450657E-15 -3.477406700626741E-12 2.98330639402514E-14 -8.55151270077238E-13 1.552794838722776E-17
q -7.673520878450657E-15 2.184280278822417E-14 1.082726370225703E-11 -8.267749665626565E-14 2.596505464269495E-12 3.287359356817696E-17
tp -3.477406700626741E-12 1.082726370225703E-11 5.397901407291677E-8 -9.724551403376216E-11 1.208036282781413E-8 4.824264114103178E-13
node 2.98330639402514E-14 -8.267749665626565E-14 -9.724551403376216E-11 2.069782879036192E-7 -2.069759984881025E-7 -3.343175454228802E-10
peri -8.55151270077238E-13 2.596505464269495E-12 1.208036282781413E-8 -2.069759984881025E-7 2.096555766429908E-7 3.343686332266442E-10
i 1.552794838722776E-17 3.287359356817696E-17 4.824264114103178E-13 -3.343175454228802E-10 3.343686332266442E-10 2.725890527486628E-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 16.7   n/a MPO437143  

245321 (2005 EU81)          Discovered 2005-Mar-04 by Spacewatch at Kitt Peak
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28

[ show close-approach data ]
Alternate Designations
 2005 EU81 = 2000 AY206 = 2001 HA24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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