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JPL Small-Body Database Browser
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243299 (2008 EN109)
Classification: Main-belt Asteroid          SPK-ID: 2243299
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1792890507415356 6.3629e-08  
a 3.128029876455833 4.3833e-08 au
q 2.567208369214903 2.1926e-07 au
i 4.636191570696431 7.3887e-06 deg
node 327.2746216555832 6.4146e-05 deg
peri 327.2034866248692 6.7307e-05 deg
M 242.2183356238763 1.7964e-05 deg
tp 2459261.619476820055
(2021-Feb-16.11947682)		 0.00010453 TDB
period 2020.713605261865
5.53		 4.2475e-05
1.163e-07		 d
yr
n .1781548850181307 3.7447e-09 deg/d
Q 3.688851383696762 5.1692e-08 au
   Orbit Determination Parameters
   # obs. used (total)      201  
   data-arc span      21338 days (58.42 yr)  
   first obs. used      1960-09-25  
   last obs. used      2019-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57113  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 10:28:52  

Additional Information
 Earth MOID = 1.55209 au 
 Jupiter MOID = 1.53897 au 
 T_jup = 3.184 
[ 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 16.0   n/a MPO345602  
diameter diameter 4.424 km 0.179 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.036   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243299 (2008 EN109)          Discovered 2008-Mar-07 by Mt. Lemmon Survey at Mount Lemmon
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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