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(2017 SP21)
Classification: Aten [NEO]          SPK-ID: 3782060
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1390064085421141 4.4281e-05  
a .9810028182940118 1.2902e-05 au
q .844637139753269 3.2483e-05 au
i 11.19209627773544 0.0034885 deg
node 188.1936096522071 0.00010144 deg
peri 69.12368111216317 0.0066166 deg
M 204.8659542237804 0.036478 deg
tp 2459353.435542293093
(2021-May-18.93554229)
0.038977 TDB
period 354.8982104478389
0.97
0.0070013
1.917e-05
d
yr
n 1.014375360038371 2.0011e-05 deg/d
Q 1.117368496834755 1.4695e-05 au
  Orbit Determination Parameters
   # obs. used (total)      31  
   data-arc span      2 days  
   first obs. used      2017-09-30  
   last obs. used      2017-10-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      5  
   norm. resid. RMS      .56142  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 19:37:46  

Additional Information
 Earth MOID = .00803513 au 
 Jupiter MOID = 3.89776 au 
 T_jup = 6.148 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 27.8   n/a MPO421454  

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