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JPL Small-Body Database Browser
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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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05008270583905148 5.3101e-08  
a 5.194407879063564 9.6464e-08 au
q 4.934257877248372 3.3916e-07 au
i 40.42289720735044 8.2174e-06 deg
node 207.5414351212837 7.5734e-06 deg
peri 102.9081563322801 8.789e-05 deg
M 289.999950377918 9.0127e-05 deg
tp 2459841.310926718746
(2022-Sep-18.81092672)
0.0010894 TDB
period 4324.167414922263
11.84
0.00012045
3.298e-07
d
yr
n .08325302086077346 2.3191e-09 deg/d
Q 5.454557880878755 1.013e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1243  
   data-arc span      25132 days (68.81 yr)  
   first obs. used      1951-07-08  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52381  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:06:11  

Additional Information
 Earth MOID = 4.07362 au 
 Jupiter MOID = .168128 au 
 T_jup = 2.521 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457009.5 (2014-Dec-18.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04914521050557458 5.2158e-08  
q 4.936855447943351 3.3381e-07 au
tp 2455557.328173161950
(2010-Dec-26.82817316)
0.0010904 TDB
node 207.533501509771 7.5717e-06 deg
peri 105.7265101297159 9.0445e-05 deg
i 40.42955077605992 8.2186e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1243  
   data-arc span      25132 days (68.81 yr)  
   first obs. used      1951-07-08  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52381  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:06:11  

Additional Information
 Jupiter MOID = .168128 au 
 T_jup = 2.521 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.720459919731269E-15 -1.696513733432838E-14 -1.116464919165671E-11 -2.524566260731015E-15 -9.560884714370768E-13 3.880654801467998E-15
q -1.696513733432838E-14 1.114315824066364E-13 7.799817488737662E-11 2.666689398067979E-14 6.870233510291744E-12 -2.337563484255925E-14
tp -1.116464919165671E-11 7.799817488737662E-11 1.189030735959704E-6 5.401670608380616E-11 9.827056720146375E-8 -1.164107784482263E-10
node -2.524566260731015E-15 2.666689398067979E-14 5.401670608380616E-11 5.733065085838317E-11 -3.842828534962623E-11 1.832386087526488E-11
peri -9.560884714370768E-13 6.870233510291744E-12 9.827056720146375E-8 -3.842828534962623E-11 8.180274795731726E-9 -2.362147848204155E-11
i 3.880654801467998E-15 -2.337563484255925E-14 -1.164107784482263E-10 1.832386087526488E-11 -2.362147848204155E-11 6.754570132099672E-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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