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175887 (1999 WL8)
Classification: Main-belt Asteroid          SPK-ID: 2175887
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1068996859387852 6.4791e-08  
a 2.392342829028239 1.8397e-08 au
q 2.136602131947215 1.4864e-07 au
i 6.793381540324169 6.0235e-06 deg
node 27.49167869163938 5.6978e-05 deg
peri 36.44460475520035 6.9435e-05 deg
M 240.8915611382326 3.8107e-05 deg
tp 2459647.670949199203
(2022-Mar-09.17094920)
0.00014494 TDB
period 1351.554459533651
3.70
1.559e-05
4.268e-08
d
yr
n .2663599660824741 3.0724e-09 deg/d
Q 2.648083526109262 2.0364e-08 au
  Orbit Determination Parameters
   # obs. used (total)      296  
   data-arc span      7118 days (19.49 yr)  
   first obs. used      1999-10-06  
   last obs. used      2019-04-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56748  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 17:43:14  

Additional Information
 Earth MOID = 1.15271 au 
 Jupiter MOID = 2.63062 au 
 T_jup = 3.514 
[ 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 16.7   n/a MPO422677  

175887 (1999 WL8)          Discovered 1999-Nov-29 by Donati, S. at Monte Agliale
Reference: 20080221/Numbers.arcLast Updated: 2008-02-22

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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