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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1936049426002303 7.3101e-08  
a 2.562651922058328 1.7827e-08 au
q 2.066509843783856 1.9532e-07 au
i 12.72636997873655 6.7261e-06 deg
node 4.133914835106377 2.5061e-05 deg
peri 177.7162876852435 3.1117e-05 deg
M 257.1844129892192 2.1973e-05 deg
tp 2459428.446340809754
(2021-Aug-01.94634081)
9.489e-05 TDB
period 1498.41757627039
4.10
1.5635e-05
4.281e-08
d
yr
n .2402534551790642 2.5069e-09 deg/d
Q 3.058794000332801 2.1278e-08 au
  Orbit Determination Parameters
   # obs. used (total)      357  
   data-arc span      7168 days (19.62 yr)  
   first obs. used      2001-03-18  
   last obs. used      2020-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54235  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 05:25:17  

Additional Information
 Earth MOID = 1.0693 au 
 Jupiter MOID = 1.90061 au 
 T_jup = 3.374 
[ 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 16.2   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

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