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243295 (2008 EP9)
Classification: Main-belt Asteroid          SPK-ID: 2243295
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1896894902429323 5.1097e-08  
a 3.194689160967931 3.2273e-08 au
q 2.588690202539303 1.7271e-07 au
i 12.72742789308241 5.419e-06 deg
node 142.5938343817364 2.6494e-05 deg
peri 98.71979245652422 3.1094e-05 deg
M 327.1138359333659 1.5024e-05 deg
tp 2459191.025038313751
(2020-Dec-07.52503831)		 8.8019e-05 TDB
period 2085.649565390936
5.71		 3.1604e-05
8.653e-08		 d
yr
n .1726080958056448 2.6155e-09 deg/d
Q 3.800688119396558 3.8394e-08 au
   Orbit Determination Parameters
   # obs. used (total)      227  
   data-arc span      6230 days (17.06 yr)  
   first obs. used      2003-04-01  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58322  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 12:47:30  

Additional Information
 Earth MOID = 1.61485 au 
 Jupiter MOID = 1.50092 au 
 T_jup = 3.130 
[ 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 15.8   n/a MPO433594  
diameter diameter 4.491 km 1.683 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.038   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243295 (2008 EP9)          Discovered 2008-Mar-01 by Spacewatch at Kitt Peak
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

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