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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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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05008270945859584 5.2863e-08  
a 5.194407898714764 9.4066e-08 au
q 4.934257877113997 3.3881e-07 au
i 40.42289649450706 7.9286e-06 deg
node 207.5414358202415 7.1733e-06 deg
peri 102.9081800938069 8.3858e-05 deg
M 289.999923622212 8.5244e-05 deg
tp 2459841.311252868313
(2022-Sep-18.81125287)
0.0010294 TDB
period 4324.167439460693
11.84
0.00011746
3.216e-07
d
yr
n .08325302038833604 2.2615e-09 deg/d
Q 5.454557920315531 9.8777e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1444  
   data-arc span      25282 days (69.22 yr)  
   first obs. used      1951-07-08  
   last obs. used      2020-09-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50442  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:06:14  

Additional Information
 Earth MOID = 4.07362 au 
 Jupiter MOID = .168127 au 
 T_jup = 2.521 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457370.5 (2015-Dec-14.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04903816103222575 5.1958e-08  
q 4.936380779273177 3.3399e-07 au
tp 2455551.383314042319
(2010-Dec-20.88331404)
0.0010401 TDB
node 207.538733125917 7.1715e-06 deg
peri 105.2305400677014 8.6618e-05 deg
i 40.43117030946829 7.9313e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1444  
   data-arc span      25282 days (69.22 yr)  
   first obs. used      1951-07-08  
   last obs. used      2020-09-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50442  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:06:14  

Additional Information
 Jupiter MOID = .168127 au 
 T_jup = 2.521 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.699603868484926E-15 -1.696995705287477E-14 -1.333584709236437E-11 1.15501375547938E-15 -1.135031405140784E-12 9.172879798397756E-16
q -1.696995705287477E-14 1.115462748098807E-13 8.208221748819887E-11 -1.673784804203356E-16 7.226243090067154E-12 -3.189794551060415E-15
tp -1.333584709236437E-11 8.208221748819887E-11 1.08184355576333E-6 -8.542537361991758E-11 8.976197018379361E-8 8.888307968962621E-12
node 1.15501375547938E-15 -1.673784804203356E-16 -8.542537361991758E-11 5.143029595995442E-11 -4.569210709910194E-11 2.342661319674277E-11
peri -1.135031405140784E-12 7.226243090067154E-12 8.976197018379361E-8 -4.569210709910194E-11 7.50271864116175E-9 -1.707439482112365E-11
i 9.172879798397756E-16 -3.189794551060415E-15 8.888307968962621E-12 2.342661319674277E-11 -1.707439482112365E-11 6.290535028070901E-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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