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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 ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06475474408890472 4.259e-08  
a 2.707849789338282 2.2804e-08 au
q 2.532503669198487 1.2505e-07 au
i .8736534753723443 4.7098e-06 deg
node 283.5534123025938 0.0003509 deg
peri 158.8700602482115 0.00035437 deg
M 228.9584182887476 5.1129e-05 deg
tp 2459592.936635210600
(2022-Jan-13.43663521)
0.00023439 TDB
period 1627.553528358413
4.46
2.056e-05
5.629e-08
d
yr
n .2211908817297727 2.7941e-09 deg/d
Q 2.883195909478077 2.4281e-08 au
  Orbit Determination Parameters
   # obs. used (total)      233  
   data-arc span      7587 days (20.77 yr)  
   first obs. used      2000-01-03  
   last obs. used      2020-10-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59173  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:44:56  

Additional Information
 Earth MOID = 1.54843 au 
 Jupiter MOID = 2.2519 au 
 T_jup = 3.361 
[ 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 16.7   n/a MPO437143  

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

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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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