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185682 (1996 JR16)
Classification: Main-belt Asteroid          SPK-ID: 2185682
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06955076494767005 1.7221e-07  
a 2.553882110940958 2.6033e-08 au
q 2.376257656538844 4.5624e-07 au
i 13.80018475332789 1.0384e-05 deg
node 208.6278264155579 2.3148e-05 deg
peri 298.2164328830605 0.00017272 deg
M 30.86359200281719 0.00015217 deg
tp 2458872.696230170243
(2020-Jan-24.19623017)
0.00063134 TDB
period 1490.732418135671
4.08
2.2794e-05
6.241e-08
d
yr
n .2414920314473475 3.6925e-09 deg/d
Q 2.731506565343072 2.7844e-08 au
  Orbit Determination Parameters
   # obs. used (total)      141  
   data-arc span      8777 days (24.03 yr)  
   first obs. used      1996-04-14  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .597  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 04:50:57  

Additional Information
 Earth MOID = 1.41387 au 
 Jupiter MOID = 2.30585 au 
 T_jup = 3.395 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456981.5 (2014-Nov-20.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06985959455124446 1.7577e-07  
q 2.375328354077704 4.6607e-07 au
tp 2457385.424117371327
(2015-Dec-28.92411737)
0.00063049 TDB
node 208.6700706757646 2.317e-05 deg
peri 299.1368056733797 0.00016895 deg
i 13.79415129487373 1.0379e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      141  
   data-arc span      8777 days (24.03 yr)  
   first obs. used      1996-04-14  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .597  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 04:50:57  

Additional Information
 Jupiter MOID = 2.30585 au 
 T_jup = 3.395 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.089379966059673E-14 -8.18575137418489E-14 1.035050526680269E-10 -2.610671141506938E-13 2.764853898653183E-11 -2.208205673768536E-13
q -8.18575137418489E-14 2.17219337042773E-13 -2.747038182315446E-10 6.929662964197546E-13 -7.340015320799691E-11 5.855029310205363E-13
tp 1.035050526680269E-10 -2.747038182315446E-10 3.975186944361109E-7 -9.365785769359557E-10 1.055157970666906E-7 -7.683582892925193E-10
node -2.610671141506938E-13 6.929662964197546E-13 -9.365785769359557E-10 5.368269487185821E-10 -7.6749239903464E-10 -4.970347245391901E-11
peri 2.764853898653183E-11 -7.340015320799691E-11 1.055157970666906E-7 -7.6749239903464E-10 2.854304748691958E-8 -1.544045494817669E-10
i -2.208205673768536E-13 5.855029310205363E-13 -7.683582892925193E-10 -4.970347245391901E-11 -1.544045494817669E-10 1.077331980238482E-10

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.1   n/a MPO459841  

185682 (1996 JR16)          Discovered 1996-May-11 by Spacewatch at Kitt Peak
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

Alternate Designations
 1996 JR16 = 2000 GS145 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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