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508825 (2001 SK169)
Classification: Mars-crossing Asteroid          SPK-ID: 2508825
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5640512414084869 2.6131e-07  
a 3.019083295179607 1.1632e-07 au
q 1.316165614617924 7.4105e-07 au
i 20.10003666252426 3.756e-05 deg
node 177.2134651033077 2.2706e-05 deg
peri 264.5868776018846 5.5106e-05 deg
M 221.8346222840892 5.7254e-05 deg
tp 2459935.873198562495
(2022-Dec-22.37319856)
0.00034529 TDB
period 1916.068669727324
5.25
0.00011074
3.032e-07
d
yr
n .1878847066849811 1.0859e-08 deg/d
Q 4.72200097574129 1.8194e-07 au
  Orbit Determination Parameters
   # obs. used (total)      132  
   data-arc span      6057 days (16.58 yr)  
   first obs. used      2001-09-12  
   last obs. used      2018-04-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56432  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 18:33:56  

Additional Information
 Earth MOID = .50907 au 
 Jupiter MOID = 1.75352 au 
 T_jup = 2.905 
[ 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 17.4   n/a MPO440958  

508825 (2001 SK169)          Discovered 2001-Sep-20 by LINEAR at Socorro
Reference: Last Updated: 2018-02-05

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