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266509 (2008 EM54)
Classification: Main-belt Asteroid          SPK-ID: 2266509
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 .08239289471225543 5.4548e-08  
a 2.260036388466387 1.4068e-08 au
q 2.07382544826561 1.2278e-07 au
i 7.502044553092845 5.8833e-06 deg
node 34.838944398 4.0432e-05 deg
peri 172.5563690111949 5.3835e-05 deg
M 199.6590846510927 3.5121e-05 deg
tp 2459553.230502982926
(2021-Dec-04.73050298)
0.00012288 TDB
period 1240.999408297375
3.40
1.1588e-05
3.173e-08
d
yr
n .2900887765078892 2.7087e-09 deg/d
Q 2.446247328667165 1.5228e-08 au
  Orbit Determination Parameters
   # obs. used (total)      306  
   data-arc span      6857 days (18.77 yr)  
   first obs. used      2001-02-16  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5851  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 19:34:01  

Additional Information
 Earth MOID = 1.06885 au 
 Jupiter MOID = 2.51233 au 
 T_jup = 3.605 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.1   n/a MPO437227  

266509 (2008 EM54)          Discovered 2008-Mar-06 by Spacewatch at Kitt Peak
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

Alternate Designations
 2008 EM54 = 2006 SY186 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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