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19994 Tresini (1990 TJ15)
Classification: Main-belt Asteroid          SPK-ID: 2019994
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1777037825424081 5.3285e-08  
a 2.774673889740545 1.3547e-08 au
q 2.281603844211994 1.4611e-07 au
i 8.078606962820183 4.6645e-06 deg
node 307.2713072831001 2.9205e-05 deg
peri 70.24602560045724 3.1348e-05 deg
M 152.1830523523592 1.3334e-05 deg
tp 2458286.858433724373
(2018-Jun-17.35843372)		 5.9945e-05 TDB
period 1688.170659531675
4.62		 1.2364e-05
3.385e-08		 d
yr
n .2132485824033156 1.5618e-09 deg/d
Q 3.267743935269096 1.5955e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1675  
   data-arc span      12695 days (34.76 yr)  
   first obs. used      1985-09-07  
   last obs. used      2020-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44754  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:05:24  

Additional Information
 Earth MOID = 1.29803 au 
 Jupiter MOID = 2.28769 au 
 T_jup = 3.298 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457136.5 (2015-Apr-24.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1748914151637044 5.2914e-08  
q 2.293243476919752 1.4462e-07 au
tp 2456596.335228303178
(2013-Oct-30.83522830)		 5.681e-05 TDB
node 307.3796215719756 2.9121e-05 deg
peri 70.23545878475558 3.137e-05 deg
i 8.08519114480503 4.6669e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1675  
   data-arc span      12695 days (34.76 yr)  
   first obs. used      1985-09-07  
   last obs. used      2020-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44754  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:05:24  

Additional Information
 Jupiter MOID = 2.28769 au 
 T_jup = 3.298 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.799934952745217E-15 -7.630251558146447E-15 -1.321347013647751E-13 -2.792553163864747E-15 -1.562025429678332E-13 -9.60997989966265E-16
q -7.630251558146447E-15 2.091364569072735E-14 5.235408955614712E-13 7.698244216630861E-15 4.618123812577243E-13 2.400058553304322E-15
tp -1.321347013647751E-13 5.235408955614712E-13 3.227321820240039E-9 -4.82226783385108E-12 6.686496729477433E-10 -1.617213982397995E-12
node -2.792553163864747E-15 7.698244216630861E-15 -4.82226783385108E-12 8.480293911897739E-10 -8.402850878242348E-10 4.692155582231446E-11
peri -1.562025429678332E-13 4.618123812577243E-13 6.686496729477433E-10 -8.402850878242348E-10 9.840472354241442E-10 -4.671708515224153E-11
i -9.60997989966265E-16 2.400058553304322E-15 -1.617213982397995E-12 4.692155582231446E-11 -4.671708515224153E-11 2.178040753109361E-11

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.44   n/a E2021B10  
diameter diameter 5.240 km 0.107 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.66 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Aznar, A. (2013) Posting on CALL web site. http://www.MinorPlanet.info/call.html]
geometric albedo albedo 0.281   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19994 Tresini           Discovered 1990 Oct. 13 by L. G. Karachkina and G. R. Kastel' at the Crimean Astrophysical Observatory.
Dominico Tresini (c. 1670-1734), architect and engineer, worked in St. Petersburg beginning in 1703 and is regarded as the city's first architect. He built the Peter and Paul fortress, the Summer Palace of Peter I and the House of 12 Boards, which now houses St. Petersburg University.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030318/MPCPages.arcLast Updated: 2003-10-02

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Alternate Designations
 1990 TJ15 = 1999 RW103 
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