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175659 (1981 EP23)
Classification: Main-belt Asteroid          SPK-ID: 2175659
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1468690007929366 6.795e-08  
a 3.113908352584794 3.9862e-08 au
q 2.656571744279886 2.1565e-07 au
i 15.51560735753186 1.0213e-05 deg
node 354.5293930056838 1.9905e-05 deg
peri 230.543932264053 3.4403e-05 deg
M 52.85726468932841 2.9754e-05 deg
tp 2458905.814103805672
(2020-Feb-26.31410381)		 0.00016384 TDB
period 2007.045261488463
5.49		 3.8539e-05
1.055e-07		 d
yr
n .1793681522324101 3.4442e-09 deg/d
Q 3.571244960889702 4.5716e-08 au
   Orbit Determination Parameters
   # obs. used (total)      271  
   data-arc span      13956 days (38.21 yr)  
   first obs. used      1981-02-09  
   last obs. used      2019-04-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62556  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:06:17  

Additional Information
 Earth MOID = 1.67885 au 
 Jupiter MOID = 1.53992 au 
 T_jup = 3.146 
[ 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 15.1   n/a MPO469885  

175659 (1981 EP23)          Discovered 1981-Mar-03 by Bus, S. J. at Siding Spring
Reference: 20080221/Numbers.arcLast Updated: 2008-02-22

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[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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