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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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3608005253823481 2.9769e-08  
a 4.76412394925233 4.1221e-08 au
q 3.045225525375462 1.5485e-07 au
i 5.883461328662276 3.8189e-06 deg
node 117.0862929382267 4.7611e-05 deg
peri 96.46062016355542 4.8039e-05 deg
M 186.3046695380299 6.7969e-06 deg
tp 2460833.061876350634
(2025-Jun-06.56187635)
9.022e-05 TDB
period 3798.157807303126
10.40
4.9295e-05
1.35e-07
d
yr
n .09478279162276758 1.2301e-09 deg/d
Q 6.483022373129197 5.6093e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1433  
   data-arc span      24071 days (65.90 yr)  
   first obs. used      1954-12-22  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54925  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:25:33  

Additional Information
 Earth MOID = 2.04691 au 
 Jupiter MOID = .202835 au 
 T_jup = 2.868 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457183.5 (2015-Jun-10.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3618691927387714 2.9803e-08  
q 3.032035418451634 1.5451e-07 au
tp 2457035.373938961468
(2015-Jan-12.87393896)
5.6073e-05 TDB
node 117.140878924328 4.7626e-05 deg
peri 96.10374180073181 4.8056e-05 deg
i 5.887281644213955 3.8226e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1433  
   data-arc span      24071 days (65.90 yr)  
   first obs. used      1954-12-22  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54925  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:25:33  

Additional Information
 Jupiter MOID = .202835 au 
 T_jup = 2.868 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.882097416520526E-16 -4.550620810085786E-15 -2.640293352278819E-13 -3.277667262435675E-13 2.920907488068318E-13 -8.353286349493944E-16
q -4.550620810085786E-15 2.3872470055598E-14 1.915119146905748E-12 1.336065006075131E-12 -1.091219385620165E-12 4.962007324016827E-15
tp -2.640293352278819E-13 1.915119146905748E-12 3.144126380728154E-9 -2.034087525464418E-10 5.05695508315952E-10 4.385206060680771E-12
node -3.277667262435675E-13 1.336065006075131E-12 -2.034087525464418E-10 2.268218760310109E-9 -2.269146516861106E-9 2.821671579359598E-11
peri 2.920907488068318E-13 -1.091219385620165E-12 5.05695508315952E-10 -2.269146516861106E-9 2.309383033910827E-9 -2.74192192454837E-11
i -8.353286349493944E-16 4.962007324016827E-15 4.385206060680771E-12 2.821671579359598E-11 -2.74192192454837E-11 1.461235395018694E-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 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. 2020-October); 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 01:27 00:03 Jupiter 0.807968481906661 0.807916810510169 0.808020154198331 4.20040230243342 3.9429313119297 2417204.560416624 3.06935686194615 2927.12080450526 103.555873557242 -27.3734509461265 601561.843007373 T 31 CATAB v2.0f-lin.ifort 2020-Dec-18 02:25:37 2020-Dec-18 02:25
1939-Mar-18 08:24 01:05 Jupiter 1.39005205174104 1.38969630056756 1.3904078050156 9.26053127615774 9.1944955120218 2429340.850086707 65.0884868459653 17944.4710092764 64.6501203564215 -10.7401152699749 423437.3514482 T 31 CATAB v2.0f-lin.ifort 2020-Dec-18 02:25:37 2020-Dec-18 02:25
1953-Nov-30 04:28 < 00:01 Jupiter 0.333613451787734 0.333610398194518 0.333616506574812 5.70055060017727 5.23625909059459 2434711.685813634 0.492188644737577 1146.21432478589 61.4835511309142 -81.4693029569246 884276.160684832 T 31 CATAB v2.0f-lin.ifort 2020-Dec-18 02:25:37 2020-Dec-18 02:25
1986-Jun-29 11:10 < 00:01 Jupiter 0.59714979543242 0.597148196940812 0.597151393924383 7.1011701449369 6.89853121124002 2446610.965270160 0.41734558420481 86.5627524846975 54.9642002144348 32.4227755063402 1054691.70028571 T 31 CATAB v2.0f-lin.ifort 2020-Dec-18 02:25:37 2020-Dec-18 02:25
2000-Dec-05 16:16 00:01 Jupiter 1.2447041594557 1.24470309318347 1.24470522572808 3.96069801803589 3.78498700717771 2451884.177740694 1.05103613218967 74.4183916223836 44.2010997811328 64.6674843733121 2558062.98451595 T 31 CATAB v2.0f-lin.ifort 2020-Dec-18 02:25:37 2020-Dec-18 02:25
2002-Nov-22 03:08 00:04 Jupiter 1.54965170425356 1.54965015490114 1.54965325360308 2.83304374644502 2.63305126158785 2452600.630276808 3.93924621735156 66.0948498285828 28.2722881161662 -75.0090771609716 373161.874183216 T 31 CATAB v2.0f-lin.ifort 2020-Dec-18 02:25:37 2020-Dec-18 02:25
2069-May-15 03:37 < 00:01 Jupiter 0.876857496741751 0.876850684910713 0.876864308573487 7.762546040318 7.63709177701008 2476881.650864895 0.864085595710223 341.976574816692 55.1136530785562 10.5847258559666 441550.471698962 T 31 CATAB v2.0f-lin.ifort 2020-Dec-18 02:25:37 2020-Dec-18 02:25
2079-Jul-13 23:01 00:07 Jupiter 1.57265138552579 1.57264432270282 1.57265844834168 3.90454983968338 3.76408275873314 2480593.458760022 7.35226480301541 310.63750695892 54.2242382981808 -10.8612088557087 338440.852446934 T 31 CATAB v2.0f-lin.ifort 2020-Dec-18 02:25:37 2020-Dec-18 02:25
2081-Nov-18 11:34 00:05 Jupiter 1.34815561610889 1.34815082958008 1.34816040263685 3.94667424408572 3.78413433766029 2481451.981893693 5.32185861659763 232.632997668054 50.7132683639033 13.3905724032321 741924.801409721 T 31 CATAB v2.0f-lin.ifort 2020-Dec-18 02:25:37 2020-Dec-18 02:25
2095-Dec-21 10:49 00:12 Jupiter 1.21826121582001 1.21824590947875 1.21827652214977 3.75309289767848 3.56302721700239 2486597.950788907 11.9225124173793 737.846537184935 74.6830066191109 -9.17864379216314 317595.654740051 T 31 CATAB v2.0f-lin.ifort 2020-Dec-18 02:25:37 2020-Dec-18 02:25
2108-Apr-05 04:02 00:02 Jupiter 0.88675552155016 0.886743962289875 0.886767080812712 7.76176642641928 7.63771120160045 2491085.667957939 2.19033457824455 580.858152931664 64.3009895214075 10.6700386947182 341632.553228433 T 31 CATAB v2.0f-lin.ifort 2020-Dec-18 02:25:37 2020-Dec-18 02:25
2175-Nov-14 00:01 00:15 Jupiter 0.231227774271409 0.231195839619786 0.231260050255385 5.8602189782919 5.19767853916331 2515779.501019941 14.6171864518004 15033.2490124605 52.007671273617 -82.2438500338284 725972.47654691 T 31 CATAB v2.0f-lin.ifort 2020-Dec-18 02:25:37 2020-Dec-18 02:25
2189-Jun-15 08:11 2_01:48 Jupiter 1.61877574784231 1.61822501617811 1.6193276246047 4.46321677574276 4.34439942081983 2520741.840852789 2988.21161885566 74112.7847575494 46.8051659461379 68.3416960201903 4676438.3965045 T 31 CATAB v2.0f-lin.ifort 2020-Dec-18 02:25:37 2020-Dec-18 02:25

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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