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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456688.5 (2014-Jan-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02648713582735482 6.0766e-08  
q 2.996464784781917 1.9251e-07 au
tp 2457428.392804431529
(2016-Feb-09.89280443)
0.00059685 TDB
node 323.8407686084335 3.4778e-05 deg
peri 11.66872282434355 0.0001136 deg
i 9.270940765170224 6.4573e-06 deg
  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
 Jupiter MOID = 1.99895 au 
 T_jup = 3.206 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.692555015124704E-15 -1.156394650565993E-14 5.622618157955038E-13 8.856021317188856E-15 3.088051336457517E-14 7.872340362126153E-16
q -1.156394650565993E-14 3.705912460197845E-14 2.771092627949701E-12 -2.608412199281086E-14 6.681394232202212E-13 3.182212085546521E-16
tp 5.622618157955038E-13 2.771092627949701E-12 3.562263514175227E-7 -1.063799764737298E-10 6.457434255115878E-8 -1.336681146286019E-11
node 8.856021317188856E-15 -2.608412199281086E-14 -1.063799764737298E-10 1.209519601072699E-9 -1.212420868586679E-9 2.140887340111042E-11
peri 3.088051336457517E-14 6.681394232202212E-13 6.457434255115878E-8 -1.212420868586679E-9 1.290567674132704E-8 -2.36292119445517E-11
i 7.872340362126153E-16 3.182212085546521E-16 -1.336681146286019E-11 2.140887340111042E-11 -2.36292119445517E-11 4.169685952518169E-11

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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