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72552 (2001 EK2)
Classification: Main-belt Asteroid          SPK-ID: 2072552
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2138791555941324 4.4178e-08  
a 2.749095029283448 1.8329e-08 au
q 2.161120905772277 1.2341e-07 au
i 12.42503094742914 7.4599e-06 deg
node 25.61515199834047 2.1756e-05 deg
peri 239.4648765115711 2.8508e-05 deg
M 42.23784664597664 1.8027e-05 deg
tp 2459005.163984791204
(2020-Jun-04.66398479)
8.2959e-05 TDB
period 1664.880458148664
4.56
1.6651e-05
4.559e-08
d
yr
n .2162317409865677 2.1626e-09 deg/d
Q 3.337069152794618 2.225e-08 au
  Orbit Determination Parameters
   # obs. used (total)      736  
   data-arc span      8003 days (21.91 yr)  
   first obs. used      1998-09-18  
   last obs. used      2020-08-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53825  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:02:42  

Additional Information
 Earth MOID = 1.17496 au 
 Jupiter MOID = 1.85591 au 
 T_jup = 3.280 
[ 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 14.68   n/a E2021B10  
diameter diameter 5.123 km 0.290 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.081   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

72552 (2001 EK2)          Discovered 2001-Mar-01 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 EK2 = 1998 SV124 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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