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71930 (2000 WM61)
Classification: Main-belt Asteroid          SPK-ID: 2071930
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1592943397942884 2.7065e-08  
a 2.380733877939155 9.0466e-09 au
q 2.001496446626942 6.2966e-08 au
i 2.896318815821568 3.836e-06 deg
node 239.1620182902423 7.2581e-05 deg
peri 228.2633103076923 7.4175e-05 deg
M 102.0223433500225 1.5808e-05 deg
tp 2458620.260264885132
(2019-May-16.76026489)
5.7839e-05 TDB
period 1341.728685565645
3.67
7.6477e-06
2.094e-08
d
yr
n .2683105786385057 1.5293e-09 deg/d
Q 2.759971309251369 1.0488e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1167  
   data-arc span      8061 days (22.07 yr)  
   first obs. used      1998-05-23  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50794  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:41:26  

Additional Information
 Earth MOID = 1.01967 au 
 Jupiter MOID = 2.36915 au 
 T_jup = 3.519 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457070.5 (2015-Feb-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1591292388712233 2.7134e-08  
q 2.002017924369237 6.3123e-08 au
tp 2457279.494205473785
(2015-Sep-13.99420547)
5.4617e-05 TDB
node 239.2218868363431 7.2647e-05 deg
peri 228.5304146850721 7.4238e-05 deg
i 2.894727754775278 3.8341e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1167  
   data-arc span      8061 days (22.07 yr)  
   first obs. used      1998-05-23  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50794  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:41:26  

Additional Information
 Jupiter MOID = 2.36915 au 
 T_jup = 3.519 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.362523876775688E-16 -1.701160523534045E-15 1.073953358571914E-13 8.964687261314928E-15 1.701975417799928E-14 -6.06544716671491E-16
q -1.701160523534045E-15 3.984524411385393E-15 -1.087891852433284E-13 -2.07017176566569E-14 -2.952155478922251E-15 1.379852602482153E-15
tp 1.073953358571914E-13 -1.087891852433284E-13 2.982974328537392E-9 1.66033811870623E-12 8.47745344824117E-10 -2.921650246871919E-13
node 8.964687261314928E-15 -2.07017176566569E-14 1.66033811870623E-12 5.277641878138124E-9 -5.270050775233217E-9 -9.158380504215589E-11
peri 1.701975417799928E-14 -2.952155478922251E-15 8.47745344824117E-10 -5.270050775233217E-9 5.511243207249361E-9 9.139129056987474E-11
i -6.06544716671491E-16 1.379852602482153E-15 -2.921650246871919E-13 -9.158380504215589E-11 9.139129056987474E-11 1.470070187747772E-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 15.4   n/a MPO468661  

71930 (2000 WM61)          Discovered 2000-Nov-21 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

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