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58557 (1997 KE3)
Classification: Main-belt Asteroid          SPK-ID: 2058557
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2079460342184038 4.5252e-08  
a 2.694900043855841 1.0794e-08 au
q 2.134506267121016 1.2478e-07 au
i 12.41745703007445 4.5678e-06 deg
node 220.9427440197579 1.7869e-05 deg
peri 144.3240026223293 2.0849e-05 deg
M 328.9312889803754 8.314e-06 deg
tp 2459139.954699407552
(2020-Oct-17.45469941)		 3.7197e-05 TDB
period 1615.892328297992
4.42		 9.7084e-06
2.658e-08		 d
yr
n .2227871212057708 1.3385e-09 deg/d
Q 3.255293820590666 1.3039e-08 au
   Orbit Determination Parameters
   # obs. used (total)      837  
   data-arc span      8571 days (23.47 yr)  
   first obs. used      1997-05-30  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46081  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 21:40:32  

Additional Information
 Earth MOID = 1.14731 au 
 Jupiter MOID = 2.2715 au 
 T_jup = 3.306 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3   n/a MPO432139  

58557 (1997 KE3)          Discovered 1997-May-30 by Spacewatch at Kitt Peak
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 KE3 = 1998 UR21 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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