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357547 (2004 ST20)
Classification: Main-belt Asteroid          SPK-ID: 2357547
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2852717320980231 6.6286e-08  
a 3.077368170511506 4.5518e-08 au
q 2.199482022206364 2.2384e-07 au
i 13.36026295249256 1.0244e-05 deg
node 14.84679397770085 2.9561e-05 deg
peri 304.0690900734201 3.7567e-05 deg
M 3.656862910780599 2.8138e-05 deg
tp 2458980.470330091877
(2020-May-10.97033009)
0.0001538 TDB
period 1971.821570249964
5.40
4.3748e-05
1.198e-07
d
yr
n .1825723003701413 4.0507e-09 deg/d
Q 3.955254318816648 5.8503e-08 au
  Orbit Determination Parameters
   # obs. used (total)      190  
   data-arc span      5395 days (14.77 yr)  
   first obs. used      2004-08-20  
   last obs. used      2019-05-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56125  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:42:54  

Additional Information
 Earth MOID = 1.21948 au 
 Jupiter MOID = 1.6091 au 
 T_jup = 3.125 
[ 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 15.5   n/a MPO476673  

357547 (2004 ST20)          Discovered 2004-Sep-17 by Yeung, W. K. Y. at Desert Eagle
Reference: 20130327/Numbers.arcLast Updated: 2013-03-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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