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123939 (2001 EP17)
Classification: Main-belt Asteroid          SPK-ID: 2123939
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2597161559515638 7.1684e-08  
a 3.166224361805156 2.5498e-08 au
q 2.343904741676928 2.1946e-07 au
i 26.19427460071973 5.8967e-06 deg
node 115.5555858089202 1.7619e-05 deg
peri 85.57037448507864 2.133e-05 deg
M 145.1793524654642 1.1338e-05 deg
tp 2458170.623798651746
(2018-Feb-21.12379865)
6.1171e-05 TDB
period 2057.836926614206
5.63
2.4859e-05
6.806e-08
d
yr
n .1749409758101261 2.1133e-09 deg/d
Q 3.988543981933384 3.2121e-08 au
  Orbit Determination Parameters
   # obs. used (total)      543  
   data-arc span      23185 days (63.48 yr)  
   first obs. used      1955-03-19  
   last obs. used      2018-09-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .524  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 04:53:29  

Additional Information
 Earth MOID = 1.50921 au 
 Jupiter MOID = 1.79294 au 
 T_jup = 2.995 
[ 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 14.5   n/a MPO493706  
diameter diameter 7.091 km 1.167 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.080   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

123939 (2001 EP17)          Discovered 2001-Mar-15 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

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