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52657 (1998 AK7)
Classification: Main-belt Asteroid          SPK-ID: 2052657
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09573670409675408 4.8586e-08  
a 3.155825866430653 2.654e-08 au
q 2.853697499275299 1.6012e-07 au
i 21.3888017976778 5.651e-06 deg
node 320.2675492746898 1.1917e-05 deg
peri 253.9581375697579 3.961e-05 deg
M 282.1621537210267 4.2299e-05 deg
tp 2459443.247669789525
(2021-Aug-16.74766979)
0.00024334 TDB
period 2047.707750712591
5.61
2.5831e-05
7.072e-08
d
yr
n .1758063375375328 2.2178e-09 deg/d
Q 3.457954233586007 2.9081e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1202  
   data-arc span      8065 days (22.08 yr)  
   first obs. used      1998-01-05  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50585  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:32:24  

Additional Information
 Earth MOID = 1.93601 au 
 Jupiter MOID = 1.77511 au 
 T_jup = 3.092 
[ 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 13.3   n/a MPO459210  
diameter diameter 14.026 km 0.127 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.063   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52657 (1998 AK7)          Discovered 1998-Jan-05 by Kobayashi, T. at Oizumi
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 AK7 = 2000 PW17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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