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190857 (2001 SW265)
Classification: Main-belt Asteroid          SPK-ID: 2190857
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1364079597736946 4.0879e-08  
a 2.406678240643652 1.9375e-08 au
q 2.078388172005706 1.0105e-07 au
i 7.10379362050515 7.1291e-06 deg
node 21.30401412525751 3.6157e-05 deg
peri 287.8029421625848 4.4816e-05 deg
M 114.1291267994974 2.8864e-05 deg
tp 2458768.165923664555
(2019-Oct-11.66592366)
0.00010715 TDB
period 1363.720829601978
3.73
1.6468e-05
4.509e-08
d
yr
n .2639836484019029 3.1878e-09 deg/d
Q 2.734968309281597 2.2018e-08 au
  Orbit Determination Parameters
   # obs. used (total)      337  
   data-arc span      8508 days (23.29 yr)  
   first obs. used      1997-10-26  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60334  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:09:24  

Additional Information
 Earth MOID = 1.07564 au 
 Jupiter MOID = 2.53181 au 
 T_jup = 3.499 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456798.5 (2014-May-21.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1362173711117489 4.0797e-08  
q 2.079270428333026 1.0087e-07 au
tp 2457405.859920296393
(2016-Jan-18.35992030)
0.00010222 TDB
node 21.3596153083643 3.6135e-05 deg
peri 287.991251500125 4.4864e-05 deg
i 7.105957311140236 7.1304e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      337  
   data-arc span      8508 days (23.29 yr)  
   first obs. used      1997-10-26  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60334  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:09:24  

Additional Information
 Jupiter MOID = 2.53181 au 
 T_jup = 3.499 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.664394128628325E-15 -4.057929810963629E-15 8.169155225661575E-13 4.567737836500073E-16 2.174566246136556E-13 2.350993819798872E-15
q -4.057929810963629E-15 1.017425120645096E-14 -1.550497765067399E-12 -1.941153863604369E-15 -4.516818009105932E-13 -4.851365917577448E-15
tp 8.169155225661575E-13 -1.550497765067399E-12 1.04496784038419E-8 -2.045685934108755E-11 2.720937815283958E-9 -1.045674944409131E-12
node 4.567737836500073E-16 -1.941153863604369E-15 -2.045685934108755E-11 1.305747447538279E-9 -1.300325424462548E-9 5.93327348421287E-12
peri 2.174566246136556E-13 -4.516818009105932E-13 2.720937815283958E-9 -1.300325424462548E-9 2.012791749929792E-9 -6.242007617753389E-12
i 2.350993819798872E-15 -4.851365917577448E-15 -1.045674944409131E-12 5.93327348421287E-12 -6.242007617753389E-12 5.084231093791821E-11

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 16.35   n/a MPCxxxxx  

190857 (2001 SW265)          Discovered 2001-Sep-25 by Yeung, W. K. Y. at Desert Eagle
Reference: 20080917/Numbers.arcLast Updated: 2008-09-19

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