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71928 (2000 WB61)
Classification: Main-belt Asteroid          SPK-ID: 2071928
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1000251847854859 3.486e-08  
a 2.280976789078705 8.3748e-09 au
q 2.052821664259703 7.8516e-08 au
i 4.949209722971638 3.8897e-06 deg
node 221.9206803185301 3.7685e-05 deg
peri 330.3845384335319 4.1563e-05 deg
M 139.5019810723417 1.712e-05 deg
tp 2458512.906845072524
(2019-Jan-29.40684507)
5.9541e-05 TDB
period 1258.287046711292
3.45
6.9299e-06
1.897e-08
d
yr
n .2861032392735107 1.5757e-09 deg/d
Q 2.509131913897706 9.2125e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1425  
   data-arc span      16952 days (46.41 yr)  
   first obs. used      1974-04-24  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51927  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 18:43:43  

Additional Information
 Earth MOID = 1.0534 au 
 Jupiter MOID = 2.45573 au 
 T_jup = 3.594 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457015.5 (2014-Dec-24.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09977737074870524 3.4872e-08  
q 2.053984880120738 7.8568e-08 au
tp 2457253.714328701274
(2015-Aug-19.21432870)
5.9494e-05 TDB
node 221.9986652923908 3.7673e-05 deg
peri 330.2549504324286 4.1574e-05 deg
i 4.949234753175378 3.8903e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1425  
   data-arc span      16952 days (46.41 yr)  
   first obs. used      1974-04-24  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51927  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 18:43:43  

Additional Information
 Jupiter MOID = 2.45573 au 
 T_jup = 3.594 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.216063028010165E-15 -2.727700389703448E-15 3.697253580750383E-13 -2.560225388234919E-15 1.206994278838303E-13 3.368434751408004E-16
q -2.727700389703448E-15 6.172872455448719E-15 -8.530175841733097E-13 6.038651496896281E-15 -2.801300407462449E-13 -7.132645496055085E-16
tp 3.697253580750383E-13 -8.530175841733097E-13 3.539488397019172E-9 -9.021100993376778E-12 1.054272634007663E-9 1.259413814228951E-12
node -2.560225388234919E-15 6.038651496896281E-15 -9.021100993376778E-12 1.419228859289777E-9 -1.416078940842024E-9 -6.799308542642106E-12
peri 1.206994278838303E-13 -2.801300407462449E-13 1.054272634007663E-9 -1.416078940842024E-9 1.728397679326216E-9 7.147263008757692E-12
i 3.368434751408004E-16 -7.132645496055085E-16 1.259413814228951E-12 -6.799308542642106E-12 7.147263008757692E-12 1.513421608286665E-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 15.2   n/a MPO319907  

71928 (2000 WB61)          Discovered 2000-Nov-21 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 WB61 = 1974 HJ3 = 1999 RO126 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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