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JPL Small-Body Database Browser
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117661 (2005 EH198)
Classification: Main-belt Asteroid          SPK-ID: 2117661
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01532725868191991 4.9834e-08  
a 3.146106491467508 3.086e-08 au
q 3.097885303431918 1.5389e-07 au
i 10.42712107108447 9.3856e-06 deg
node 198.6143852833099 2.5583e-05 deg
peri 104.4679367730189 0.00028878 deg
M 82.49579643521196 0.00028852 deg
tp 2458133.423653990735
(2018-Jan-14.92365399)
0.0016329 TDB
period 2038.255181830869
5.58
2.999e-05
8.211e-08
d
yr
n .1766216532694542 2.5987e-09 deg/d
Q 3.194327679503098 3.1333e-08 au
  Orbit Determination Parameters
   # obs. used (total)      399  
   data-arc span      7523 days (20.60 yr)  
   first obs. used      1999-03-21  
   last obs. used      2019-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58082  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 13:53:26  

Additional Information
 Earth MOID = 2.10429 au 
 Jupiter MOID = 1.82202 au 
 T_jup = 3.183 
[ 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 15.2   n/a MPO453647  
diameter diameter 5.943 km 0.334 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

117661 (2005 EH198)          Discovered 2005-Mar-11 by Mt. Lemmon Survey at Mt. Lemmon
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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