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85808 (1998 WF12)
Classification: Main-belt Asteroid          SPK-ID: 2085808
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1253220797274156 4.7647e-08  
a 2.420699718213365 1.121e-08 au
q 2.117332595131297 1.1991e-07 au
i 5.697258999225435 4.5486e-06 deg
node 229.1715392595526 4.0117e-05 deg
peri 172.4177910412187 4.4051e-05 deg
M 270.859202882205 2.0345e-05 deg
tp 2459341.130724988538
(2021-May-06.63072499)
7.9134e-05 TDB
period 1375.655872067516
3.77
9.5562e-06
2.616e-08
d
yr
n .2616933546461331 1.8179e-09 deg/d
Q 2.724066841295433 1.2615e-08 au
  Orbit Determination Parameters
   # obs. used (total)      661  
   data-arc span      7935 days (21.72 yr)  
   first obs. used      1998-11-10  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56633  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:57:17  

Additional Information
 Earth MOID = 1.12596 au 
 Jupiter MOID = 2.65436 au 
 T_jup = 3.496 
[ 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 15.5   n/a MPO280333  

85808 (1998 WF12)          Discovered 1998-Nov-21 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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