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4105 Tsia (1989 EK)
Classification: Main-belt Asteroid          SPK-ID: 2004105
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1911289421406872 2.6156e-08  
a 2.703104005459351 9.8043e-09 au
q 2.186462596399651 7.3668e-08 au
i 6.358495196616478 4.3e-07 deg
node 204.1147298309015 8.0571e-06 deg
peri 63.73661267630254 8.803e-06 deg
M 343.4181263180414 3.7149e-06 deg
tp 2459275.269359894904
(2021-Mar-01.76935990)
1.6991e-05 TDB
period 1623.276722428032
4.44
8.8316e-06
2.418e-08
d
yr
n .2217736477250326 1.2066e-09 deg/d
Q 3.219745414519052 1.1678e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2741  
   data-arc span      30986 days (84.84 yr)  
   first obs. used      1936-05-18  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44553  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:24:35  

Additional Information
 Earth MOID = 1.17805 au 
 Jupiter MOID = 1.89417 au 
 T_jup = 3.331 
[ show covariance matrix ]

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 12.81   n/a E2021B10  
diameter diameter 13.334 km 0.187 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 12.58745 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.119   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4105 Tsia (1989 EK)          Discovered 1989-Mar-05 by Helin, E. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1929-Sep-09 17:05 00:01 Jupiter 1.86918713377745 1.86918695760785 1.86918730994706 2.28226327662643 2.074228839131 2425864.211462860 1.35718986039243 81.0060463205848 3.04360610040324 79.41360335118 6746171.39501613 T 43 CATAB v2.0g-lin.ifort 2021-May-03 21:25:52 2021-May-03 21:25
1965-Mar-21 03:42 < 00:01 Jupiter 1.87729618897411 1.87729601681484 1.87729636113338 2.32547807364926 2.12260752016545 2438840.653838014 0.772034622194079 47.3057967879543 2.82746934263086 80.7616883406719 6817533.98345949 T 43 CATAB v2.0g-lin.ifort 2021-May-03 21:25:52 2021-May-03 21:25
2000-Sep-26 13:57 < 00:01 Jupiter 1.87762901675326 1.87762886119918 1.87762917230734 2.36247664657321 2.16311587201345 2451814.081036450 0.220323906732342 15.1234250927518 2.47334544500138 78.8234302156106 7100426.71563151 T 43 CATAB v2.0g-lin.ifort 2021-May-03 21:25:52 2021-May-03 21:25
2036-Apr-03 13:52 < 00:01 Jupiter 1.8893932507172 1.88939310086403 1.88939340057038 2.42230644811563 2.22956510820095 2464787.077917132 0.378167458660628 24.9238528090501 2.78577053485881 87.2910082283974 7742877.96963432 T 43 CATAB v2.0g-lin.ifort 2021-May-03 21:25:52 2021-May-03 21:25
2071-Oct-07 03:50 < 00:01 Jupiter 1.89557644278441 1.89557622071516 1.89557666485398 2.4796817464793 2.29240883303387 2477756.659795596 0.945726930838399 62.0905330658339 2.71020808675564 89.3985826681373 7548237.39067358 T 43 CATAB v2.0g-lin.ifort 2021-May-03 21:25:52 2021-May-03 21:25
2107-Apr-07 16:42 00:02 Jupiter 1.91266771279112 1.91266730194434 1.91266812363954 2.56751437135306 2.38881404498236 2490722.195491198 1.53701624866003 102.276254188997 2.77984923864513 -87.7819619082455 7729204.27088395 T 43 CATAB v2.0g-lin.ifort 2021-May-03 21:25:52 2021-May-03 21:25
2142-Oct-04 04:59 00:02 Jupiter 1.92900373849569 1.92900308916489 1.92900438783012 2.65827560637398 2.48761579457537 2503685.707631406 2.1464856077464 144.14391302137 2.87211600765236 -85.6871054455376 7995514.64330046 T 43 CATAB v2.0g-lin.ifort 2021-May-03 21:25:52 2021-May-03 21:25
2178-Mar-26 15:13 00:03 Jupiter 1.95238911594406 1.95238810344907 1.95239012844526 2.7792560305368 2.6185083758816 2516643.134302677 2.7666851130212 187.897134894363 3.01774807331176 -82.5590961822993 8374122.85124984 T 43 CATAB v2.0g-lin.ifort 2021-May-03 21:25:52 2021-May-03 21:25

Alternate Designations
 1989 EK = 1927 HB = 1936 KC = 1958 GJ = 1977 RF6 = 1982 VS10 = 1982 XQ4 = 1985 JC2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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