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19844 (2000 ST317)
Classification: Jupiter Trojan          SPK-ID: 2019844
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05008270945578101 5.2867e-08  
a 5.194407897086704 9.4173e-08 au
q 4.934257875582097 3.3884e-07 au
i 40.42289682260503 7.9536e-06 deg
node 207.5414356531083 7.1824e-06 deg
peri 102.9081780800646 8.4076e-05 deg
M 289.9999259450584 8.5501e-05 deg
tp 2459841.311224571969
(2022-Sep-18.81122457)
0.0010325 TDB
period 4324.167437427736
11.84
0.00011759
3.219e-07
d
yr
n .08325302042747648 2.264e-09 deg/d
Q 5.454557918591312 9.889e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1411  
   data-arc span      25229 days (69.07 yr)  
   first obs. used      1951-07-08  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50427  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:30:53  

Additional Information
 Earth MOID = 4.07362 au 
 Jupiter MOID = .168127 au 
 T_jup = 2.521 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457346.5 (2015-Nov-20.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0490384049462507 5.1951e-08  
q 4.936456354186174 3.3396e-07 au
tp 2455551.852097241446
(2010-Dec-21.35209724)
0.001043 TDB
node 207.5381247531936 7.1805e-06 deg
peri 105.2700672044593 8.6843e-05 deg
i 40.43108992439043 7.9562e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1411  
   data-arc span      25229 days (69.07 yr)  
   first obs. used      1951-07-08  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50427  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:30:53  

Additional Information
 Jupiter MOID = .168127 au 
 T_jup = 2.521 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.698937400760623E-15 -1.696416324597544E-14 -1.326062506969069E-11 1.007470316869796E-15 -1.12872884931303E-12 1.102850304566132E-15
q -1.696416324597544E-14 1.115264800076495E-13 8.203392166030528E-11 8.532641699525141E-16 7.221048032629009E-12 -4.392445140108839E-15
tp -1.326062506969069E-11 8.203392166030528E-11 1.087884703181199E-6 -8.133125405386867E-11 9.024763342771145E-8 2.130253071304822E-12
node 1.007470316869796E-15 8.532641699525141E-16 -8.133125405386867E-11 5.156028138155E-11 -4.544291384880217E-11 2.319907555232602E-11
peri -1.12872884931303E-12 7.221048032629009E-12 9.024763342771145E-8 -4.544291384880217E-11 7.541785082737033E-9 -1.74626461345259E-11
i 1.102850304566132E-15 -4.392445140108839E-15 2.130253071304822E-12 2.319907555232602E-11 -1.74626461345259E-11 6.330107653826542E-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 11.0   n/a MPO474027  
diameter diameter 37.972 km 0.365 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
geometric albedo albedo 0.053   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

19844 (2000 ST317)          Discovered 2000-Sep-30 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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