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100659 (1997 WM20)
Classification: Main-belt Asteroid          SPK-ID: 2100659
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03849062645000744 5.563e-08  
a 2.65103812643964 1.8669e-08 au
q 2.548998008210125 1.44e-07 au
i 2.204688920778781 4.8845e-06 deg
node 108.6969403950591 0.00016224 deg
peri 119.3179426441593 0.00017496 deg
M 266.8970430816689 6.4731e-05 deg
tp 2459408.240039688484
(2021-Jul-12.74003969)
0.00028344 TDB
period 1576.603140721014
4.32
1.6654e-05
4.56e-08
d
yr
n .2283390098001228 2.412e-09 deg/d
Q 2.753078244669156 1.9387e-08 au
  Orbit Determination Parameters
   # obs. used (total)      311  
   data-arc span      9964 days (27.28 yr)  
   first obs. used      1992-09-24  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6204  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 14:58:20  

Additional Information
 Earth MOID = 1.5393 au 
 Jupiter MOID = 2.21618 au 
 T_jup = 3.388 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.5   n/a MPO417507  

100659 (1997 WM20)          Discovered 1997-Nov-25 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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