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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02709855753924227 6.1338e-08  
a 3.080546279056109 2.9689e-08 au
q 2.997067918460808 1.9529e-07 au
i 9.271865013794029 6.4993e-06 deg
node 323.7864488054452 3.4843e-05 deg
peri 6.742373490839407 0.00011192 deg
M 291.7143486950964 0.00010853 deg
tp 2459375.099323317789
(2021-Jun-09.59932332)
0.000597 TDB
period 1974.876915096804
5.41
2.8549e-05
7.816e-08
d
yr
n .1822898415835468 2.6352e-09 deg/d
Q 3.164024639651409 3.0493e-08 au
  Orbit Determination Parameters
   # obs. used (total)      575  
   data-arc span      10340 days (28.31 yr)  
   first obs. used      1991-01-11  
   last obs. used      2019-05-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60489  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:34:36  

Additional Information
 Earth MOID = 1.98556 au 
 Jupiter MOID = 2.00317 au 
 T_jup = 3.207 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456678.5 (2014-Jan-21.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02649416687508422 6.1374e-08  
q 2.996403036498993 1.9389e-07 au
tp 2457428.526925403004
(2016-Feb-10.02692540)
0.00059876 TDB
node 323.8409693537689 3.4865e-05 deg
peri 11.69523053910915 0.00011392 deg
i 9.27095916947852 6.4988e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      575  
   data-arc span      10340 days (28.31 yr)  
   first obs. used      1991-01-11  
   last obs. used      2019-05-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60489  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:34:36  

Additional Information
 Jupiter MOID = 2.00317 au 
 T_jup = 3.207 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.766761183949414E-15 -1.176279896720174E-14 9.516425650143599E-13 8.932035377491628E-15 9.492782490078822E-14 9.333483478378295E-16
q -1.176279896720174E-14 3.75916871986631E-14 1.714451695100701E-12 -2.63618382499698E-14 4.942761658152236E-13 -1.05166588809687E-16
tp 9.516425650143599E-13 1.714451695100701E-12 3.585157132867282E-7 -1.124617421918083E-10 6.496183942533652E-8 -1.501138292377287E-11
node 8.932035377491628E-15 -2.63618382499698E-14 -1.124617421918083E-10 1.215536818388328E-9 -1.219454296817183E-9 2.285727824346687E-11
peri 9.492782490078822E-14 4.942761658152236E-13 6.496183942533652E-8 -1.219454296817183E-9 1.29773423662215E-8 -2.536229797927067E-11
i 9.333483478378295E-16 -1.05166588809687E-16 -1.501138292377287E-11 2.285727824346687E-11 -2.536229797927067E-11 4.22350273397125E-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 14.5   n/a MPO395887  
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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