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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1910865141507395 3.0749e-08  
a 2.703214106551663 1.0295e-08 au
q 2.1866663459276 8.5402e-08 au
i 6.358298415260747 3.9158e-06 deg
node 204.1157531131551 2.9999e-05 deg
peri 63.70329656441823 3.1729e-05 deg
M 299.0867643621777 1.0891e-05 deg
tp 2459275.180774378124
(2021-Mar-01.68077438)		 4.9582e-05 TDB
period 1623.375900831719
4.44		 9.274e-06
2.539e-08		 d
yr
n .2217600987026837 1.2669e-09 deg/d
Q 3.219761867175726 1.2263e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2691  
   data-arc span      30755 days (84.20 yr)  
   first obs. used      1936-05-18  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44583  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:11:30  

Additional Information
 Earth MOID = 1.17998 au 
 Jupiter MOID = 1.89497 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 12.8   n/a MPO384790  
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 1.86918705418972 1.86918677650565 1.86918733187374 2.28226213387145 2.07422757125459 2425864.211522644 1.41669444379124 100.413439285788 20.6240265720785 85.1387871406616 2346047.05895961 T 40 CATAB v2.0f-lin.ifort 2020-Aug-24 23:11:43 2020-Aug-24 23:11
1965-Mar-21 03:42 < 00:01 Jupiter 1.87729610974643 1.87729582769639 1.87729639179635 2.32547688624957 2.12260620913346 2438840.653938036 0.807989714380472 71.7843637434255 16.9026364972143 -89.6989230357797 2586074.3689418 T 40 CATAB v2.0f-lin.ifort 2020-Aug-24 23:11:43 2020-Aug-24 23:11
2000-Sep-26 13:57 < 00:01 Jupiter 1.87762892172711 1.87762864026244 1.87762920319167 2.36247540189209 2.16311450091122 2451814.081101843 0.251538393052297 53.1827680665186 13.237608685328 -82.860603145743 3151509.24562577 T 40 CATAB v2.0f-lin.ifort 2020-Aug-24 23:11:43 2020-Aug-24 23:11
2036-Apr-03 13:52 < 00:01 Jupiter 1.88939313583056 1.889392849527 1.88939342213402 2.42230509358931 2.22956362324131 2464787.077993620 0.415536358758302 54.930915216841 12.4769403949007 -84.4254117740216 3077156.62456989 T 40 CATAB v2.0f-lin.ifort 2020-Aug-24 23:11:43 2020-Aug-24 23:11
2071-Oct-07 03:50 < 00:01 Jupiter 1.89557628950582 1.89557594938692 1.89557662962471 2.47968002212647 2.29240695097553 2477756.659950678 0.996903799089492 79.7081028911562 12.5166621234353 -87.9448868091402 2575298.6906458 T 40 CATAB v2.0f-lin.ifort 2020-Aug-24 23:11:43 2020-Aug-24 23:11
2107-Apr-07 16:42 00:02 Jupiter 1.9126675126859 1.91266701339336 1.91266801197964 2.5675124165922 2.38881192357208 2490722.195705582 1.60894346123411 115.536610130801 11.3523673458704 -87.1540089216408 2454962.64033831 T 40 CATAB v2.0f-lin.ifort 2020-Aug-24 23:11:43 2020-Aug-24 23:11
2142-Oct-04 04:59 00:02 Jupiter 1.92900344966938 1.9290027262111 1.92900417313096 2.65827328322481 2.48761328464502 2503685.707955597 2.24062044670945 156.254516380931 10.6928176201231 -85.582954819253 2468482.86041592 T 40 CATAB v2.0f-lin.ifort 2020-Aug-24 23:11:43 2020-Aug-24 23:11
2178-Mar-26 15:14 00:03 Jupiter 1.95238869007642 1.95238760687678 1.95238977328227 2.77925293947704 2.6185050580096 2516643.134792701 2.88351299923466 200.013979412956 10.537619581796 -82.6658240969471 2522913.33006195 T 40 CATAB v2.0f-lin.ifort 2020-Aug-24 23:11:43 2020-Aug-24 23:11

Alternate Designations
 1989 EK = 1927 HB = 1936 KC = 1958 GJ = 1977 RF6 = 1982 VS10 = 1982 XQ4 = 1985 JC2 
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