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52685 (1998 EZ9)
Classification: Main-belt Asteroid          SPK-ID: 2052685
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1593303949106238 4.3995e-08  
a 3.171212708457628 2.2146e-08 au
q 2.665942135273485 1.408e-07 au
i 10.28428945526594 5.1791e-06 deg
node 12.37177208357847 2.3762e-05 deg
peri 216.5226311089998 2.8002e-05 deg
M 12.87414108317 1.4998e-05 deg
tp 2459322.734676726608
(2021-Apr-18.23467673)
8.5779e-05 TDB
period 2062.701985854152
5.65
2.1607e-05
5.916e-08
d
yr
n .1745283625404211 1.8282e-09 deg/d
Q 3.676483281641771 2.5675e-08 au
  Orbit Determination Parameters
   # obs. used (total)      806  
   data-arc span      8506 days (23.29 yr)  
   first obs. used      1998-02-27  
   last obs. used      2021-06-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49964  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 08:09:11  

Additional Information
 Earth MOID = 1.66575 au 
 Jupiter MOID = 1.36135 au 
 T_jup = 3.157 
[ 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 14.44   n/a MPO614063  
diameter diameter 8.737 km 0.157 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.021   0.001 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52685 (1998 EZ9)          Discovered 1998-Mar-11 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 EZ9 = 2000 SN202 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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