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100551 (1997 EM42)
Classification: Main-belt Asteroid          SPK-ID: 2100551
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02737011952652954 6.0712e-08  
a 3.083634592246896 3.0052e-08 au
q 2.999235144880958 1.9448e-07 au
i 9.276252430888913 6.4614e-06 deg
node 323.759469455467 3.4706e-05 deg
peri 4.431172926949396 0.00011061 deg
M 330.425420586903 0.00010731 deg
tp 2459362.983350789574
(2021-May-28.48335079)
0.00059025 TDB
period 1977.847443481909
5.42
2.8913e-05
7.916e-08
d
yr
n .1820160605340909 2.6608e-09 deg/d
Q 3.168034039612835 3.0875e-08 au
  Orbit Determination Parameters
   # obs. used (total)      584  
   data-arc span      10754 days (29.44 yr)  
   first obs. used      1991-01-11  
   last obs. used      2020-06-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60376  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:32:41  

Additional Information
 Earth MOID = 1.98537 au 
 Jupiter MOID = 1.99895 au 
 T_jup = 3.206 
[ 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 14.41   n/a E2021B55  
diameter diameter 4.646 km 0.072 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.187   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

100551 (1997 EM42)          Discovered 1997-Mar-10 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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