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390185 (2012 WF16)
Classification: Main-belt Asteroid          SPK-ID: 2390185
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2308566335320886 9.8918e-08  
a 2.56996168742593 2.369e-08 au
q 1.976668983960334 2.6906e-07 au
i 6.227745418191915 5.2456e-06 deg
node 164.0601466309114 3.9273e-05 deg
peri 215.9797903685348 4.1655e-05 deg
M 322.1279012220776 8.5306e-06 deg
tp 2459158.808878733345
(2020-Nov-05.30887873)
3.4784e-05 TDB
period 1504.833325403857
4.12
2.0808e-05
5.697e-08
d
yr
n .2392291517755867 3.3079e-09 deg/d
Q 3.163254390891526 2.9159e-08 au
  Orbit Determination Parameters
   # obs. used (total)      374  
   data-arc span      4335 days (11.87 yr)  
   first obs. used      2008-12-21  
   last obs. used      2020-11-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50785  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 06:51:03  

Additional Information
 Earth MOID = .982601 au 
 Jupiter MOID = 2.30395 au 
 T_jup = 3.384 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458082.5 (2017-Nov-25.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2331028669127402 9.9401e-08  
q 1.969357262780518 2.7076e-07 au
tp 2457654.435698271383
(2016-Sep-22.93569827)
4.6136e-05 TDB
node 164.2119882565949 3.9278e-05 deg
peri 215.851383230945 4.1588e-05 deg
i 6.230010116072698 5.253e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      374  
   data-arc span      4335 days (11.87 yr)  
   first obs. used      2008-12-21  
   last obs. used      2020-11-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50785  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 06:51:03  

Additional Information
 Jupiter MOID = 2.30395 au 
 T_jup = 3.384 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.880570830419588E-15 -2.689296225675526E-14 3.174812042275725E-12 4.45782523061051E-14 9.341505995107576E-13 -2.401603237943878E-14
q -2.689296225675526E-14 7.331303647453534E-14 -8.788182693973287E-12 -1.219098356314352E-13 -2.573556256686198E-12 6.607995921917773E-14
tp 3.174812042275725E-12 -8.788182693973287E-12 2.12852929125578E-9 1.676773209207676E-11 6.44342355007657E-10 -8.58968390175576E-12
node 4.45782523061051E-14 -1.219098356314352E-13 1.676773209207676E-11 1.542798528482389E-9 -1.528103546079185E-9 1.082023604731936E-10
peri 9.341505995107576E-13 -2.573556256686198E-12 6.44342355007657E-10 -1.528103546079185E-9 1.729554173303586E-9 -1.101364651056298E-10
i -2.401603237943878E-14 6.607995921917773E-14 -8.58968390175576E-12 1.082023604731936E-10 -1.101364651056298E-10 2.759387357301617E-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 16.6   n/a MPO437597  

390185 (2012 WF16)          Discovered 2008-Dec-21 by CSS at Catalina
Reference: Last Updated: 2014-03-21
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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