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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05030808297450363 5.2505e-08  
a 5.194234115570564 9.3416e-08 au
q 4.932922154695443 3.3647e-07 au
i 40.42383347137314 7.8155e-06 deg
node 207.5423142292711 7.045e-06 deg
peri 103.0852375904666 8.2219e-05 deg
M 306.503753008974 8.3687e-05 deg
tp 2459843.042001758365
(2022-Sep-20.54200176)
0.0010092 TDB
period 4323.950438463741
11.84
0.00011665
3.194e-07
d
yr
n .08325719850940397 2.246e-09 deg/d
Q 5.455546076445686 9.8116e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1477  
   data-arc span      25462 days (69.71 yr)  
   first obs. used      1951-07-08  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50042  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 03:00:12  

Additional Information
 Earth MOID = 4.07068 au 
 Jupiter MOID = .167982 au 
 T_jup = 2.521 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457411.5 (2016-Jan-24.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04904911839413396 5.1729e-08  
q 4.936151896732956 3.3258e-07 au
tp 2455550.580625974375
(2010-Dec-20.08062597)
0.0010229 TDB
node 207.5396459012904 7.044e-06 deg
peri 105.1607335394712 8.5144e-05 deg
i 40.43126544731578 7.8172e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1477  
   data-arc span      25462 days (69.71 yr)  
   first obs. used      1951-07-08  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50042  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 03:00:12  

Additional Information
 Jupiter MOID = .167982 au 
 T_jup = 2.521 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.675892291110395E-15 -1.682468014255283E-14 -1.251103200516793E-11 8.713026155090117E-16 -1.06511248181979E-12 1.025691223623227E-15
q -1.682468014255283E-14 1.106114830893968E-13 7.662808663092161E-11 1.645310594666146E-15 6.765949060597359E-12 -4.142708561406369E-15
tp -1.251103200516793E-11 7.662808663092161E-11 1.046401845022049E-6 -5.730035282225906E-11 8.67721260334357E-8 2.409524527076173E-11
node 8.713026155090117E-16 1.645310594666146E-15 -5.730035282225906E-11 4.961774498963716E-11 -4.197181395172038E-11 2.205326258206843E-11
peri -1.06511248181979E-12 6.765949060597359E-12 8.67721260334357E-8 -4.197181395172038E-11 7.249434106451351E-9 -1.478056655803692E-11
i 1.025691223623227E-15 -4.142708561406369E-15 2.409524527076173E-11 2.205326258206843E-11 -1.478056655803692E-11 6.110898043517428E-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 11.07   n/a E2021B10  
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)  
rotation period rot_per 14.5469 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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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