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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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0957367091852077 4.8322e-08  
a 3.155825868060812 2.6321e-08 au
q 2.853697484691118 1.5944e-07 au
i 21.38880149735344 5.6247e-06 deg
node 320.2675494521961 1.1797e-05 deg
peri 253.9581356294708 3.9397e-05 deg
M 282.1621550609836 4.2054e-05 deg
tp 2459443.247662510802
(2021-Aug-16.74766251)
0.00024191 TDB
period 2047.707752299223
5.61
2.5619e-05
7.014e-08
d
yr
n .1758063374013123 2.1995e-09 deg/d
Q 3.457954251430505 2.8841e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1248  
   data-arc span      8333 days (22.81 yr)  
   first obs. used      1998-01-05  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50421  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:16:47  

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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