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175784 (1999 JX66)
Classification: Main-belt Asteroid          SPK-ID: 2175784
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1747754462139463 3.9101e-08  
a 2.732433386001687 1.6593e-08 au
q 2.254871121713358 1.108e-07 au
i 8.07683703719395 4.7949e-06 deg
node 180.085399854755 2.9189e-05 deg
peri 68.6883114822682 3.2438e-05 deg
M 301.8896649985384 1.6857e-05 deg
tp 2459662.801541173278
(2022-Mar-24.30154117)
7.8672e-05 TDB
period 1649.767718943093
4.52
1.5027e-05
4.114e-08
d
yr
n .2182125373568531 1.9876e-09 deg/d
Q 3.209995650290017 1.9492e-08 au
  Orbit Determination Parameters
   # obs. used (total)      596  
   data-arc span      8079 days (22.12 yr)  
   first obs. used      1999-03-25  
   last obs. used      2021-05-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55965  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 02:29:21  

Additional Information
 Earth MOID = 1.25708 au 
 Jupiter MOID = 1.85839 au 
 T_jup = 3.317 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457596.5 (2016-Jul-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .176028333639633 3.897e-08  
q 2.250646129630178 1.1059e-07 au
tp 2458012.620213748734
(2017-Sep-16.12021375)
7.0381e-05 TDB
node 180.1237475450419 2.9184e-05 deg
peri 68.64169385680962 3.2409e-05 deg
i 8.07840258812104 4.7965e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      596  
   data-arc span      8079 days (22.12 yr)  
   first obs. used      1999-03-25  
   last obs. used      2021-05-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55965  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 02:29:21  

Additional Information
 Jupiter MOID = 1.85839 au 
 T_jup = 3.317 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.518683089256801E-15 -4.279098159488926E-15 -8.605909109553659E-13 -2.917693805308E-15 -1.570761254574075E-13 2.065357663134724E-16
q -4.279098159488926E-15 1.223111609582639E-14 2.787563905571009E-12 9.568489888453457E-15 5.044996069513971E-13 -1.73057933384212E-16
tp -8.605909109553659E-13 2.787563905571009E-12 4.953538849872404E-9 4.390604712113015E-12 1.007987690026452E-9 4.921306369517871E-13
node -2.917693805308E-15 9.568489888453457E-15 4.390604712113015E-12 8.516981649571276E-10 -8.419822061436124E-10 1.755647547689339E-11
peri -1.570761254574075E-13 5.044996069513971E-13 1.007987690026452E-9 -8.419822061436124E-10 1.050324912570907E-9 -1.727206389724041E-11
i 2.065357663134724E-16 -1.73057933384212E-16 4.921306369517871E-13 1.755647547689339E-11 -1.727206389724041E-11 2.300637952111731E-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 15.53   n/a MPCxxxxx  

175784 (1999 JX66)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20080221/Numbers.arcLast Updated: 2008-02-22

[ 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
1929-May-24 23:25 00:02 Jupiter 1.84973334728333 1.84973291832191 1.84973377624602 2.22358212062509 2.00710872406426 2425756.475734790 2.26683523097821 145.281951430703 37.4972236739922 74.9406280539623 1638129.51751679 T 20 CATAB v2.0g-lin.ifort 2021-Jul-09 02:29:22 2021-Jul-09 02:29
1987-Aug-14 14:34 < 00:01 Jupiter 1.96596514302028 1.96596455342064 1.96596573262014 3.22487133166567 3.08838289586584 2447022.106839057 0.745503972669933 66.3087085812137 16.9744205798576 -77.2012911493495 2355856.20474015 T 20 CATAB v2.0g-lin.ifort 2021-Jul-09 02:29:22 2021-Jul-09 02:29
2024-Mar-17 11:33 < 00:01 Jupiter 1.85349603579979 1.85349565088319 1.85349642071628 2.26671782917194 2.05524618583134 2460386.981134816 0.259753622573694 61.2463258273404 22.1453984169788 -79.6201261800606 2416841.27899271 T 20 CATAB v2.0g-lin.ifort 2021-Jul-09 02:29:22 2021-Jul-09 02:29
2082-Jun-07 07:05 00:02 Jupiter 1.99711657470867 1.99711572699177 1.99711742242784 3.36055189727413 3.23188236434578 2481652.794847675 1.69759747979181 132.92700423491 16.7583622199096 -77.4383643003612 2601046.35657045 T 20 CATAB v2.0g-lin.ifort 2021-Jul-09 02:29:22 2021-Jul-09 02:29
2119-Jan-08 14:57 00:03 Jupiter 1.85528272498649 1.85528234195117 1.8552831080217 2.31874850705195 2.11270016511113 2495016.122923763 2.66663710400636 176.019064529151 28.1216384424747 79.7114135951731 1710028.48751907 T 20 CATAB v2.0g-lin.ifort 2021-Jul-09 02:29:22 2021-Jul-09 02:29
2155-Aug-24 13:30 00:04 Jupiter 1.97819353724996 1.9781919473121 1.9781951271868 1.8610220154187 1.61463412075502 2508393.062519760 3.75382058330196 60.8124629981085 34.8426137361183 57.6177646036593 1580079.23632012 T 20 CATAB v2.0g-lin.ifort 2021-Jul-09 02:29:22 2021-Jul-09 02:29

Alternate Designations
 1999 JX66 = 2000 SE194 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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