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120747 (1997 WE11)
Classification: Main-belt Asteroid          SPK-ID: 2120747
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1839242990661039 4.9792e-08  
a 2.378284783017864 8.9824e-09 au
q 1.940860421321722 1.1866e-07 au
i 2.27749647591339 5.5955e-06 deg
node 44.51331018265493 0.00010979 deg
peri 334.2007394636411 0.00011046 deg
M 70.72209161701367 1.1004e-05 deg
tp 2458737.323680943890
(2019-Sep-10.82368094)
4.0805e-05 TDB
period 1339.65883494044
3.67
7.5895e-06
2.078e-08
d
yr
n .2687251340495249 1.5224e-09 deg/d
Q 2.815709144714005 1.0634e-08 au
  Orbit Determination Parameters
   # obs. used (total)      407  
   data-arc span      8173 days (22.38 yr)  
   first obs. used      1997-09-09  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56299  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 06:22:44  

Additional Information
 Earth MOID = .943314 au 
 Jupiter MOID = 2.6446 au 
 T_jup = 3.516 
[ 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 16.9   n/a MPO449701  

120747 (1997 WE11)          Discovered 1997-Nov-22 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 1997 WE11 = 2001 YR70 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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