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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .224242731667854 0.00032134  
a 42.60525098279588 0.020765 au
q 33.05133311901921 0.0071895 au
i 14.04259950443869 0.00072703 deg
node 56.33894287892611 0.00042017 deg
peri 237.77950774 0.061771 deg
M 357.2138814071711 0.035264 deg
tp 2460182.622481948490
(2023-Aug-26.12248195)
9.5433 TDB
period 101576.4706606076
278.10
74.26
0.2033
d
yr
n .003544127864048851 2.591e-06 deg/d
Q 52.15916884657255 0.025422 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      4  
   norm. resid. RMS      .40709  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:09:46  

Additional Information
 Earth MOID = 32.0571 au 
 Jupiter MOID = 28.0076 au 
 T_jup = 5.533 
[ hide covariance matrix ]
Orbital Elements at Epoch 2450941.5 (1998-May-08.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2190241240111275 0.00032027  
q 32.98160750340438 0.007203 au
tp 2460209.054772015561
(2023-Sep-21.55477202)
9.7364 TDB
node 56.34759714807985 0.0004205 deg
peri 237.99340947309 0.062971 deg
i 14.0607592697108 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      4  
   norm. resid. RMS      .40709  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:09:46  

Additional Information
 Jupiter MOID = 28.0076 au 
 T_jup = 5.533 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.025729421612728E-7 2.343202216467396E-7 -.0009476612114232141 1.637920180147775E-8 -4.189838105993529E-6 3.96048737259032E-8
q 2.343202216467396E-7 5.188260881499498E-5 -.06853680315897416 2.743513397158365E-7 -.0004505880878557057 7.98656629223068E-7
tp -.0009476612114232141 -.06853680315897416 94.79715686700109 -.0004554777792034022 .6100160768946378 -.001275861231051483
node 1.637920180147775E-8 2.743513397158365E-7 -.0004554777792034022 1.7681902982798E-7 -2.861398527920477E-6 2.722703840259623E-7
peri -4.189838105993529E-6 -.0004505880878557057 .6100160768946378 -2.861398527920477E-6 .003965381594847461 -7.927783431721821E-6
i 3.96048737259032E-8 7.98656629223068E-7 -.001275861231051483 2.722703840259623E-7 -7.927783431721821E-6 5.290794936810005E-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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