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15809 (1994 JS)
Classification: TransNeptunian Object          SPK-ID: 2015809
Ephemeris | Orbit Diagram | Orbital Elements | 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 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2250388391837981 0.00032175  
a 42.65501275008072 0.020836 au
q 33.05597819543244 0.0071452 au
i 14.03211834752111 0.00072642 deg
node 56.28304853509093 0.00042102 deg
peri 237.3882811840012 0.061511 deg
M 356.0928552721656 0.035665 deg
tp 2460104.859671409232
(2023-Jun-09.35967141)
9.5088 TDB
period 101754.4804202024
278.59
74.556
0.2041
d
yr
n .00353792775033939 2.5923e-06 deg/d
Q 52.25404730472899 0.025525 au
  Orbit Determination Parameters
   # obs. used (total)      38  
   data-arc span      2259 days (6.18 yr)  
   first obs. used      1995-04-06  
   last obs. used      2001-06-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      4  
   norm. resid. RMS      .40251  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 05:11:49  

Additional Information
 Earth MOID = 32.0619 au 
 Jupiter MOID = 28.0099 au 
 T_jup = 5.535 
[ hide covariance matrix ]
Orbital Elements at Epoch 2450941.5 (1998-May-08.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2190153445116372 0.00032027  
q 32.98184982197325 0.0072029 au
tp 2460208.823393565206
(2023-Sep-21.32339357)
9.737 TDB
node 56.34763527151932 0.0004205 deg
peri 237.9916033560799 0.062974 deg
i 14.06081567359564 0.00072738 deg
  Orbit Determination Parameters
   # obs. used (total)      38  
   data-arc span      2259 days (6.18 yr)  
   first obs. used      1995-04-06  
   last obs. used      2001-06-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      4  
   norm. resid. RMS      .40251  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 05:11:49  

Additional Information
 Jupiter MOID = 28.0099 au 
 T_jup = 5.535 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.025727793940074E-7 2.343444005104411E-7 -.0009476233062448279 1.637923640318791E-8 -4.189641914288261E-6 3.960543524318902E-8
q 2.343444005104411E-7 5.188113807512733E-5 -.06854071121602802 2.743425950229142E-7 -.0004506003148585692 7.986410188030575E-7
tp -.0009476233062448279 -.06854071121602802 94.80888784468274 -.0004554825108191526 .61007795698238 -.00127589808353455
node 1.637923640318791E-8 2.743425950229142E-7 -.0004554825108191526 1.768161036534693E-7 -2.861373349289987E-6 2.722680473405999E-7
peri -4.189641914288261E-6 -.0004506003148585692 .61007795698238 -2.861373349289987E-6 .003965683873426268 -7.927851029824106E-6
i 3.960543524318902E-8 7.986410188030575E-7 -.00127589808353455 2.722680473405999E-7 -7.927851029824106E-6 5.290803356476427E-7

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.8   n/a PDS3 (MPO 1707)  

15809 (1994 JS)          Discovered 1994-May-11 by Jewitt, D. C., Luu, J. X. at Cerro Tololo
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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