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13406 Sekora (1999 TA4)
Classification: Main-belt Asteroid          SPK-ID: 2013406
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1658528454374807 3.7616e-08  
a 2.741369896817515 1.4139e-08 au
q 2.286705899033677 1.0809e-07 au
i 12.4319887000716 4.4851e-06 deg
node 230.8934207876163 2.0346e-05 deg
peri 39.18425940887337 2.5765e-05 deg
M 306.4587831379673 1.6746e-05 deg
tp 2459247.067381290480
(2021-Feb-01.56738129)
7.7506e-05 TDB
period 1657.867759959667
4.54
1.2826e-05
3.512e-08
d
yr
n .2171463904990577 1.68e-09 deg/d
Q 3.196033894601352 1.6484e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1703  
   data-arc span      25838 days (70.74 yr)  
   first obs. used      1949-11-21  
   last obs. used      2020-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47659  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:46:34  

Additional Information
 Earth MOID = 1.2855 au 
 Jupiter MOID = 1.9114 au 
 T_jup = 3.296 
[ 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 13.5   n/a MPO435828  

13406 Sekora           Discovered 1999 Oct. 2 by L. Sarounova at Ondrejov.
Ondřej Sekora (1899-1967), Czech journalist, cartoonist, illustrator and writer, is known mainly for his work for children and creation of the character of Ferda Mravenec ("Ferda the Ant"). Sekora's popular stories about the life of insects and animals are based on his exceptional knowledge of nature.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010109/MPCPages.arcLast Updated: 2009-05-11

[ hide close-approach data ]
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
1941-Jan-03 21:40 00:02 Jupiter 1.93803245847215 1.938031760556 1.93803315639314 4.07292133010694 3.96416227692437 2429998.402525561 1.55281130323961 188.304693851517 16.3142420360504 -81.2182193566568 3055419.53422814 T 33 CATAB v2.0f-lin.ifort 2020-Nov-13 02:46:38 2020-Nov-13 02:46
1977-Nov-10 21:12 < 00:01 Jupiter 1.99576904669191 1.9957685419868 1.99576955139747 3.53067949125534 3.4083543681868 2443458.383012225 0.813048890415379 113.320794252195 24.0314665966216 85.1411102926965 3532498.07213388 T 33 CATAB v2.0f-lin.ifort 2020-Nov-13 02:46:38 2020-Nov-13 02:46
2036-Aug-25 20:42 < 00:01 Jupiter 1.90704296462314 1.90704258977853 1.90704333946776 3.81049215154272 3.69209162894528 2464931.362546082 0.516992117555731 94.9605412451492 17.0533706057206 89.3439368901231 3720877.36060578 T 33 CATAB v2.0f-lin.ifort 2020-Nov-13 02:46:38 2020-Nov-13 02:46
2095-Jun-14 11:52 00:02 Jupiter 1.91733482249489 1.91733431748854 1.9173353275058 4.03794370447224 3.92701512399091 2486407.994725794 1.74226569805365 217.290594743903 15.7177075971809 -85.5037209252194 3195514.27634291 T 33 CATAB v2.0f-lin.ifort 2020-Nov-13 02:46:38 2020-Nov-13 02:46
2191-Feb-06 12:12 00:04 Jupiter 1.93744631225373 1.93744504566672 1.93744757886046 3.62667249258739 3.50405241357719 2521343.008205649 3.82613902520262 342.918637687127 25.1145887358891 78.7723142439923 3078781.50229108 T 33 CATAB v2.0f-lin.ifort 2020-Nov-13 02:46:38 2020-Nov-13 02:46

Alternate Designations
 1999 TA4 = 1981 UW5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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