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19844 (2000 ST317)
Classification: Jupiter Trojan          SPK-ID: 2019844
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
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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