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216875 (2008 EF40)
Classification: Main-belt Asteroid          SPK-ID: 2216875
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1400312590220937 7.9642e-08  
a 3.196353288459737 3.6217e-08 au
q 2.748763913197311 2.5649e-07 au
i 17.81142984290464 1.2465e-05 deg
node 198.6061746165437 1.6445e-05 deg
peri 132.0077342356366 5.0289e-05 deg
M 305.0630641723903 4.5308e-05 deg
tp 2459519.024264427230
(2021-Oct-31.52426443)
0.00026488 TDB
period 2087.279413501138
5.71
3.5475e-05
9.713e-08
d
yr
n .1724733151064558 2.9313e-09 deg/d
Q 3.643942663722163 4.1288e-08 au
  Orbit Determination Parameters
   # obs. used (total)      340  
   data-arc span      6284 days (17.20 yr)  
   first obs. used      2003-04-09  
   last obs. used      2020-06-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56118  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:56:37  

Additional Information
 Earth MOID = 1.77252 au 
 Jupiter MOID = 1.96132 au 
 T_jup = 3.106 
[ 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 15.10   n/a E2021B55  
diameter diameter 5.541 km 0.199 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.063   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

216875 (2008 EF40)          Discovered 2008-Mar-04 by Spacewatch at Kitt Peak
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09

Alternate Designations
 2008 EF40 = 2004 RK206 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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