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JPL Small-Body Database Browser
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6144 Kondojiro (1994 EQ3)
Classification: Asteroid          SPK-ID: 2006144
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3608005556729149 2.9963e-08  
a 4.764123883318852 4.1388e-08 au
q 3.045225338922805 1.5589e-07 au
i 5.883464936966297 4.3719e-06 deg
node 117.0863512070563 4.9382e-05 deg
peri 96.46056436775049 4.9719e-05 deg
M 186.3046717723092 7.0401e-06 deg
tp 2460833.061814735177
(2025-Jun-06.56181474)
9.2728e-05 TDB
period 3798.157728455758
10.40
4.9494e-05
1.355e-07
d
yr
n .09478279359039878 1.2351e-09 deg/d
Q 6.483022427714898 5.632e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1358  
   data-arc span      23717 days (64.93 yr)  
   first obs. used      1954-12-22  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56114  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 22:09:18  

Additional Information
 Earth MOID = 2.04691 au 
 Jupiter MOID = .202834 au 
 T_jup = 2.868 
[ 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 11.6   n/a MPO425867  
diameter diameter 32.492 km 1.094 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 4.0 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Behrend, R. (2014) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.042   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

6144 Kondojiro           Discovered 1994 Mar. 14 by K. Endate and K. Watanabe at Kitami.
As an amateur astronomer, Jiro Kondo (b. 1951) went to Siberia to observe the Draconid meteor shower in 1972. A professional Egyptologist since 1976, he has excavated a number of archaeological sites. He also studies the history of ancient Egyptian astronomy. He is a professor at Waseda University.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080819/MPCPages.arcLast Updated: 2008-08-25

[ 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
1905-Dec-25 01:26 00:03 Jupiter 0.807970356033508 0.807918392510934 0.808022320459298 4.20040172160704 3.94293130989127 2417204.559899952 3.12560390414538 2943.04876334633 119.58884675929 -27.3565836877008 520480.758054218 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:09:25 2019-Dec-13 22:09
1939-Mar-18 08:25 01:05 Jupiter 1.39005707867923 1.38969952236293 1.39041463711813 9.26054598964701 9.19451057085048 2429340.850719343 65.4021943600037 18035.5388551127 71.4146455951327 -10.7403861003589 383036.434262814 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:09:25 2019-Dec-13 22:09
1953-Nov-30 04:28 < 00:01 Jupiter 0.33361407816574 0.333610931854139 0.333617225628366 5.70054931816526 5.23625860528793 2434711.685814294 0.533518336342297 1151.93031944702 70.3190994614863 -81.4510981186713 771808.298516228 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:09:25 2019-Dec-13 22:09
1986-Jun-29 11:10 < 00:01 Jupiter 0.597149752908497 0.597148136647812 0.597151369169523 7.10117079654686 6.89853186734836 2446610.965252957 0.462068487109983 87.2733406805662 55.1731293451017 31.8011886837119 1043430.48654827 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:09:25 2019-Dec-13 22:09
2000-Dec-05 16:16 00:01 Jupiter 1.24470477321166 1.24470365990177 1.24470588652183 3.96069853506245 3.78498763685934 2451884.177517815 1.10425498210839 84.6938322581606 45.824373509552 67.2853377743132 2489355.63606074 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:09:25 2019-Dec-13 22:09
2002-Nov-22 03:10 00:04 Jupiter 1.54965240596815 1.54965081131337 1.54965400061977 2.83305448962354 2.63306291475682 2452600.631698267 4.0513873715717 69.684763789311 29.3776787384487 -74.5894579833731 359229.113773844 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:09:25 2019-Dec-13 22:09
2069-May-15 03:37 < 00:01 Jupiter 0.876853623611655 0.87684680645718 0.876860440766829 7.76253662508155 7.63708164841635 2476881.650602246 0.877091290411621 342.235835255772 55.1487706656244 10.5759837554483 441105.711329666 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:09:25 2019-Dec-13 22:09
2079-Jul-13 23:05 00:07 Jupiter 1.57264738505848 1.57264031945373 1.57265445065616 3.90453333274315 3.76406527180235 2480593.461749500 7.35506620050794 310.711201597474 57.9477399840228 -10.8411777216022 328254.257816406 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:09:25 2019-Dec-13 22:09
2081-Nov-18 11:31 00:05 Jupiter 1.34815296070764 1.34814817325793 1.34815774815658 3.94667015044376 3.78412974115976 2481451.979833292 5.33067696186198 232.746831683307 55.2491323972667 13.5273191699786 714305.487480929 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:09:25 2019-Dec-13 22:09
2095-Dec-21 10:42 00:12 Jupiter 1.21827008843877 1.21825476589565 1.21828541097025 3.75310238752897 3.56303863423479 2486597.946166923 11.9337347317828 738.448714153685 83.9910811117689 -9.09433475629212 291492.100636335 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:09:25 2019-Dec-13 22:09
2108-Apr-05 04:03 00:02 Jupiter 0.886749185669573 0.886737622341059 0.886760749000356 7.761751194626 7.63769482882184 2491085.668889984 2.19350615809579 581.095763554569 68.5426695592702 10.6963742757136 326598.615202528 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:09:25 2019-Dec-13 22:09
2175-Nov-13 23:53 00:15 Jupiter 0.231245666607207 0.231213525127895 0.23127814964903 5.859784235831 5.19724291108305 2515779.495425749 14.6117561752964 15040.0763202033 52.406195437724 -82.2063875247793 719703.841072635 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:09:25 2019-Dec-13 22:09
2189-Jun-16 11:57 2_01:49 Jupiter 1.61846410655986 1.61789746673675 1.6190318904617 4.4631526480468 4.3443103472357 2520742.997832951 2989.35605665207 74376.1806995167 50.7241326221944 67.7834418414041 4282331.73489419 T 28 CATAB v2.0f-lin.ifort 2019-Dec-13 22:09:25 2019-Dec-13 22:09

Alternate Designations
 1994 EQ3 = 1937 JF = 1937 JQ = 1984 FW1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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