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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08253726541790084 5.4534e-08  
a 2.260145027077039 1.4141e-08 au
q 2.073598837094233 1.2281e-07 au
i 7.502371118887594 5.8835e-06 deg
node 34.841986134 4.0428e-05 deg
peri 172.6922328259589 5.3793e-05 deg
M 83.4611600390045 3.4717e-05 deg
tp 2458312.770226346206
(2018-Jul-13.27022635)
0.00011891 TDB
period 1241.088890532526
3.40
1.1648e-05
3.189e-08
d
yr
n .2900678611711133 2.7224e-09 deg/d
Q 2.446691217059845 1.5309e-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 = 1.0688 au 
 Jupiter MOID = 2.51299 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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