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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 ]

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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3599966699262163 2.9669e-08  
a 4.76723652778163 4.1214e-08 au
q 3.051047253029625 1.5454e-07 au
i 5.883364638107865 3.6025e-06 deg
node 117.0877412778922 4.6816e-05 deg
peri 96.41360944608404 4.7262e-05 deg
M 223.8715865210606 7.0736e-06 deg
tp 2460834.122162534790
(2025-Jun-07.62216253)
8.9495e-05 TDB
period 3801.88063083975
10.41
4.9302e-05
1.35e-07
d
yr
n .09468997976416849 1.2279e-09 deg/d
Q 6.483425802533636 5.6051e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1478  
   data-arc span      24148 days (66.11 yr)  
   first obs. used      1954-12-22  
   last obs. used      2021-02-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54519  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 11:41:38  

Additional Information
 Earth MOID = 2.05336 au 
 Jupiter MOID = .201662 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 11.65   n/a E2021B10  
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

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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
1905-Dec-25 01:27 00:03 Jupiter 0.807969265939782 0.807917700481593 0.808020832290254 4.20040190026303 3.94293114296733 2417204.560288775 3.05124353748564 2921.35108078837 97.4297908451524 -27.3800357244255 639711.775895206 T 35 CATAB v2.0g-lin.ifort 2021-Aug-25 11:41:54 2021-Aug-25 11:41
1939-Mar-18 08:25 01:05 Jupiter 1.39005591068247 1.38970086395901 1.39041095949874 9.26054222235341 9.19450672118045 2429340.850564587 64.9642618161256 17908.9377396274 61.9028235567795 -10.7400959584207 442370.521365866 T 35 CATAB v2.0g-lin.ifort 2021-Aug-25 11:41:54 2021-Aug-25 11:41
1953-Nov-30 04:28 < 00:01 Jupiter 0.333613680445248 0.333610660134227 0.333616701965398 5.70054975587807 5.23625850644304 2434711.685825978 0.476908662469247 1143.96761315326 58.1476605247152 -81.476231058748 935792.573241184 T 35 CATAB v2.0g-lin.ifort 2021-Aug-25 11:41:54 2021-Aug-25 11:41
1986-Jun-29 11:10 < 00:01 Jupiter 0.597149779999537 0.597148187515895 0.597151372483517 7.10117015838996 6.89853122091017 2446610.965283819 0.400208797533657 86.2324853076911 54.6295763788957 32.3596591832855 1059220.30391939 T 35 CATAB v2.0g-lin.ifort 2021-Aug-25 11:41:54 2021-Aug-25 11:41
2000-Dec-05 16:16 00:01 Jupiter 1.24470418792753 1.2447031385589 1.24470523729628 3.96069790934218 3.78498689854389 2451884.177803178 1.03104409284335 70.5657363520241 43.5864135403831 63.2456745406523 2582555.32961137 T 35 CATAB v2.0g-lin.ifort 2021-Aug-25 11:41:54 2021-Aug-25 11:41
2002-Nov-22 03:08 00:04 Jupiter 1.54965164488303 1.54965011130177 1.54965317846148 2.83304360869613 2.63305110656993 2452600.630234971 3.89767586086951 64.7260375937582 27.8118805608705 -75.2776249655103 378869.936913709 T 35 CATAB v2.0g-lin.ifort 2021-Aug-25 11:41:54 2021-Aug-25 11:41
2069-May-15 03:37 < 00:01 Jupiter 0.8768558742889 0.876849067738773 0.876862680839726 7.76254183150195 7.63708726571899 2476881.650775905 0.859369724951819 341.723950336504 54.779999153858 10.595399696635 443431.079400348 T 35 CATAB v2.0g-lin.ifort 2021-Aug-25 11:41:54 2021-Aug-25 11:41
2079-Jul-13 23:02 00:07 Jupiter 1.57264966381387 1.57264260608091 1.57265672153986 3.90454274511157 3.76407524354703 2480593.460044456 7.34611502695343 310.442166103075 52.7935089501544 -10.8762141384491 343109.742953304 T 35 CATAB v2.0g-lin.ifort 2021-Aug-25 11:41:54 2021-Aug-25 11:41
2081-Nov-18 11:33 00:05 Jupiter 1.34815448784451 1.34814970518787 1.3481592705003 3.94667241829829 3.78413229541659 2481451.981082582 5.31619744955151 232.382556349404 48.8544121970615 13.3028662234532 754384.63818133 T 35 CATAB v2.0g-lin.ifort 2021-Aug-25 11:41:54 2021-Aug-25 11:41
2095-Dec-21 10:46 00:12 Jupiter 1.21826479030574 1.21824949812102 1.21828008247904 3.75309670274672 3.56303179866668 2486597.948933559 11.9125861828494 737.223187610645 71.1738867366304 -9.20627688056452 329483.630332215 T 35 CATAB v2.0g-lin.ifort 2021-Aug-25 11:41:54 2021-Aug-25 11:41
2108-Apr-05 04:02 00:02 Jupiter 0.886752889402332 0.886741336766649 0.886764442040231 7.76175991878699 7.63770421773514 2491085.668388688 2.18741251301308 580.507621209997 62.664449607372 10.6575627744306 348019.197294221 T 35 CATAB v2.0g-lin.ifort 2021-Aug-25 11:41:54 2021-Aug-25 11:41
2175-Nov-13 23:58 00:15 Jupiter 0.231235130926051 0.231203139221364 0.23126746348918 5.86004136113999 5.1975007071837 2515779.498811877 14.6003913693974 15023.3501896909 51.5517958775119 -82.228567747923 732745.924360052 T 35 CATAB v2.0g-lin.ifort 2021-Aug-25 11:41:54 2021-Aug-25 11:41
2189-Jun-15 19:30 2_01:46 Jupiter 1.61864971862152 1.61809296793702 1.6192076120725 4.46319201332123 4.34436460404171 2520742.312588137 2986.15685515403 74157.1155777792 46.2299060927344 68.1136262833927 4687504.69912165 T 35 CATAB v2.0g-lin.ifort 2021-Aug-25 11:41:54 2021-Aug-25 11:41

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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