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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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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 
[ 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 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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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
2193-Aug-27 20:42 00:02 Iris 0.0333120953566883 0.0332886447108773 0.0333355561002822 4.46511196772218 4.46511192907314 2522276.362231574 1.73931341890863 1484.69027518975 48.0252660841833 -38.0703950385403 64010.3415264569 T 25 CATAB v2.0f-lin.ifort 2020-Jun-23 23:41:43 2020-Jun-23 23:41
2197-May-04 15:20 00:02 Iris 0.024914477798998 0.0248959725698324 0.0249330063639087 4.15419862976841 4.15419857422481 2523622.138864827 1.82599788032348 1516.47254618439 48.0025202776394 52.5531954002391 61629.0260634288 T 25 CATAB v2.0f-lin.ifort 2020-Jun-23 23:41:43 2020-Jun-23 23:41
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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