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115916 (2003 WB8)
Classification: Outer Main-belt Asteroid          SPK-ID: 2115916
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5571831853123878 4.9864e-08  
a 3.232346005185775 3.4264e-08 au
q 1.431337161984593 1.6287e-07 au
i 20.31451145338238 6.2945e-06 deg
node 124.9791436828685 1.3613e-05 deg
peri 352.0082244088666 1.3975e-05 deg
M 329.5825106961183 6.9625e-06 deg
tp 2459575.847800667945
(2021-Dec-27.34780067)
4.3543e-05 TDB
period 2122.634369833436
5.81
3.3751e-05
9.241e-08
d
yr
n .169600570459174 2.6967e-09 deg/d
Q 5.033354848386956 5.3355e-08 au
  Orbit Determination Parameters
   # obs. used (total)      811  
   data-arc span      12295 days (33.66 yr)  
   first obs. used      1987-03-31  
   last obs. used      2020-11-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43089  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:45:46  

Additional Information
 Earth MOID = .449877 au 
 Jupiter MOID = .138164 au 
 T_jup = 2.837 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457386.5 (2015-Dec-30.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5550453776194366 5.0225e-08  
q 1.441393003156278 1.6484e-07 au
tp 2457450.866023957593
(2016-Mar-03.36602396)
2.1661e-05 TDB
node 125.0159088210461 1.3617e-05 deg
peri 352.0016169271228 1.3995e-05 deg
i 20.27793106991478 6.2839e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      811  
   data-arc span      12295 days (33.66 yr)  
   first obs. used      1987-03-31  
   last obs. used      2020-11-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43089  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:45:46  

Additional Information
 Jupiter MOID = .138164 au 
 T_jup = 2.837 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.522510415954017E-15 -8.241364469972583E-15 -4.267163318759578E-13 2.156159713824687E-14 6.593723602344408E-14 -1.487096407777116E-14
q -8.241364469972583E-15 2.717335225302293E-14 1.434774941194546E-12 -6.916158563652706E-14 -2.185016783628553E-13 4.949686745373584E-14
tp -4.267163318759578E-13 1.434774941194546E-12 4.691819342160517E-10 -5.568839852718926E-12 7.052177279587817E-11 9.633279303258257E-12
node 2.156159713824687E-14 -6.916158563652706E-14 -5.568839852718926E-12 1.854291055135162E-10 -1.730077904687293E-10 1.555260977598618E-11
peri 6.593723602344408E-14 -2.185016783628553E-13 7.052177279587817E-11 -1.730077904687293E-10 1.958512843726808E-10 -1.367247984790288E-11
i -1.487096407777116E-14 4.949686745373584E-14 9.633279303258257E-12 1.555260977598618E-11 -1.367247984790288E-11 3.948716926028014E-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 14.18   n/a E2021B55  

115916 (2003 WB8)          Discovered 2003-Nov-18 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2179-May-16 23:37 00:03 Mars 0.0732888239295332 0.0732855292597117 0.0732921200349165 11.318503301359 11.318158168698 2517059.484163251 2.60674369919406 544.476173888872 28.0018552596896 -72.6752128201946 370272.414995032 T 26 CATAB v2.0f-lin.ifort 2021-Apr-13 16:45:48 2021-Apr-13 16:45

Alternate Designations
 2003 WB8 = 1987 FJ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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