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JPL Small-Body Database Browser
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212102 (2005 EH154)
Classification: Main-belt Asteroid          SPK-ID: 2212102
[ 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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1939127124142881 7.4642e-08  
a 2.561903168996529 1.8508e-08 au
q 2.065117576553652 1.9885e-07 au
i 12.72908859719763 7.4119e-06 deg
node 4.138614582807785 2.6954e-05 deg
peri 177.7622389458186 3.3274e-05 deg
M 161.006647080927 2.2404e-05 deg
tp 2457930.640380394546
(2017-Jun-26.14038039)		 8.7985e-05 TDB
period 1497.760915030758
4.10		 1.623e-05
4.444e-08		 d
yr
n .2403587891680343 2.6046e-09 deg/d
Q 3.058688761439407 2.2097e-08 au
   Orbit Determination Parameters
   # obs. used (total)      339  
   data-arc span      6799 days (18.61 yr)  
   first obs. used      2001-03-18  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53848  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 23:43:13  

Additional Information
 Earth MOID = 1.06833 au 
 Jupiter MOID = 1.90209 au 
 T_jup = 3.374 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457185.5 (2015-Jun-12.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1935545841356323 7.4774e-08  
q 2.066802746788849 1.9918e-07 au
tp 2457931.207006144610
(2017-Jun-26.70700614)		 8.8289e-05 TDB
node 4.153798442767144 2.6939e-05 deg
peri 177.8688352324644 3.3285e-05 deg
i 12.73190375771084 7.414e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      339  
   data-arc span      6799 days (18.61 yr)  
   first obs. used      2001-03-18  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53848  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 23:43:13  

Additional Information
 Jupiter MOID = 1.90209 au 
 T_jup = 3.374 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.591139287807389E-15 -1.486104260424338E-14 -4.021602011084872E-12 -4.675990546217264E-14 -7.831001920646014E-13 -1.86507515204233E-14
q -1.486104260424338E-14 3.967100318850772E-14 1.12161307580874E-11 1.219586060019477E-13 2.185005039114312E-12 5.185639024462856E-14
tp -4.021602011084872E-12 1.12161307580874E-11 7.794995640463387E-9 5.029021367847459E-11 1.744339385363052E-9 2.042205876391168E-11
node -4.675990546217264E-14 1.219586060019477E-13 5.029021367847459E-11 7.25683884035986E-10 -6.964822041521241E-10 -8.258183009962743E-11
peri -7.831001920646014E-13 2.185005039114312E-12 1.744339385363052E-9 -6.964822041521241E-10 1.107867970305932E-9 8.485202142839537E-11
i -1.86507515204233E-14 5.185639024462856E-14 2.042205876391168E-11 -8.258183009962743E-11 8.485202142839537E-11 5.496685710159649E-11

[ 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 16.2   n/a MPO454522  
diameter diameter 3.548 km 0.804 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.051   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

212102 (2005 EH154)          Discovered 2005-Mar-08 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

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