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266516 (2008 EU137)
Classification: Main-belt Asteroid          SPK-ID: 2266516
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1790529775104309 5.1485e-08  
a 2.408343094167196 1.8442e-08 au
q 1.977122092289875 1.221e-07 au
i 3.013302985996806 4.8655e-06 deg
node 96.05934231836655 0.00010806 deg
peri 253.3244917339124 0.00010909 deg
M 303.5080970844335 1.8328e-05 deg
tp 2459214.719827617833
(2020-Dec-31.21982762)
7.0793e-05 TDB
period 1365.136133893084
3.74
1.568e-05
4.293e-08
d
yr
n .2637099634696176 3.0291e-09 deg/d
Q 2.839564096044516 2.1744e-08 au
  Orbit Determination Parameters
   # obs. used (total)      321  
   data-arc span      7500 days (20.53 yr)  
   first obs. used      1998-09-22  
   last obs. used      2019-04-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56906  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 12:47:41  

Additional Information
 Earth MOID = .973351 au 
 Jupiter MOID = 2.58328 au 
 T_jup = 3.497 
[ 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 16.9   n/a MPO433730  
rotation period rot_per 51.415 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

266516 (2008 EU137)          Discovered 2008-Mar-11 by Spacewatch at Kitt Peak
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

Alternate Designations
 2008 EU137 = 1998 SW159 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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