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85806 (1998 WG8)
Classification: Main-belt Asteroid          SPK-ID: 2085806
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .117435203645999 3.7525e-08  
a 2.22687515724659 7.5096e-09 au
q 1.965361619661121 8.2189e-08 au
i 6.750828688022216 4.9078e-06 deg
node 290.6212200282546 3.3465e-05 deg
peri 160.6920439797218 3.9711e-05 deg
M 47.50585965749497 2.0395e-05 deg
tp 2458440.327883973820
(2018-Nov-17.82788397)
6.8638e-05 TDB
period 1213.786303103503
3.32
6.1398e-06
1.681e-08
d
yr
n .2965925707676252 1.5003e-09 deg/d
Q 2.488388694832059 8.3915e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1279  
   data-arc span      7469 days (20.45 yr)  
   first obs. used      1998-11-25  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51222  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:56:02  

Additional Information
 Earth MOID = .983472 au 
 Jupiter MOID = 2.66777 au 
 T_jup = 3.627 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456841.5 (2014-Jul-03.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1170272561794991 3.7646e-08  
q 1.966645042395629 8.2458e-08 au
tp 2457227.070245391058
(2015-Jul-23.57024539)
6.8208e-05 TDB
node 290.6751529459638 3.3444e-05 deg
peri 160.8486825501283 3.9718e-05 deg
i 6.752347764831196 4.9095e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1279  
   data-arc span      7469 days (20.45 yr)  
   first obs. used      1998-11-25  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51222  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:56:02  

Additional Information
 Jupiter MOID = 2.66777 au 
 T_jup = 3.627 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.417244150920436E-15 -3.094791178948131E-15 9.457570685454181E-13 -1.201382437057598E-14 2.836490897404565E-13 -1.480842796278431E-15
q -3.094791178948131E-15 6.799289533930138E-15 -2.082020436615394E-12 2.592437274249107E-14 -6.279618776477896E-13 3.28149122550358E-15
tp 9.457570685454181E-13 -2.082020436615394E-12 4.652312541633319E-9 -1.301073774787083E-11 1.473486497267444E-9 -2.762470554615963E-12
node -1.201382437057598E-14 2.592437274249107E-14 -1.301073774787083E-11 1.11849836732397E-9 -1.114000007872759E-9 6.27181859769657E-11
peri 2.836490897404565E-13 -6.279618776477896E-13 1.473486497267444E-9 -1.114000007872759E-9 1.577481922187507E-9 -6.309671914407437E-11
i -1.480842796278431E-15 3.28149122550358E-15 -2.762470554615963E-12 6.27181859769657E-11 -6.309671914407437E-11 2.410337208851417E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.8   n/a MPO366217  

85806 (1998 WG8)          Discovered 1998-Nov-25 by Kobayashi, T. at Oizumi
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1998 WG8 = 2001 QB84 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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