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JPL Small-Body Database Browser
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(2019 WJ4)
Classification: Apollo [NEO]          SPK-ID: 3893641
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .677225090579875 0.00060782  
a 2.194683058699649 0.0036894 au
q .708388625477662 0.00014314 au
i 10.73195375935853 0.0080781 deg
node 67.94521010907236 0.00011468 deg
peri 72.33799250731515 0.00085656 deg
M 280.9596932780164 0.20383 deg
tp 2458861.236757182238
(2020-Jan-12.73675718)
0.014918 TDB
period 1187.561593299063
3.25
2.9945
0.008198
d
yr
n .303142171346174 0.00076439 deg/d
Q 3.680977491921636 0.0061879 au
  Orbit Determination Parameters
   # obs. used (total)      21  
   data-arc span      3 days  
   first obs. used      2019-11-26  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .65607  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-01 04:52:32  

Additional Information
 Earth MOID = 8.28734E-5 au 
 Jupiter MOID = 1.53684 au 
 T_jup = 3.310 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 28.408   .39065 2 autocmod 2.8

[ 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
1984-Apr-30 18:03 6_20:17 Earth 0.125465673014117 0.109658208980567 0.198746967762841 20.0539271530872 20.0528681445274 2445821.251935999 9857.07663514858 5225739.45508608 86.2524450727115 -60.9312269423364 197715.725280949 T 2 CATAB v2.0f-lin.ifort 2019-Dec-01 04:52:34 2019-Dec-01 04:52
1984-Jun-14 13:46 4_21:44 Mars 0.0383952152841445 0.0268687001923082 0.108918195272797 20.770039109233 20.7696801083484 2445866.073668835 7064.392769011 3895848.06356355 112.543812633504 -44.415284313683 35709.2908662326 T 2 CATAB v2.0f-lin.ifort 2019-Dec-01 04:52:34 2019-Dec-01 04:52
1985-Nov-13 21:41 3_05:44 Jupiter 1.53352850814071 1.52108749965237 1.54597509444422 4.64661909439615 4.5261901907214 2446383.403414722 4663.75193264808 638258.455429122 222.582696285539 8.15636970921847 221185.599409987 T 2 CATAB v2.0f-lin.ifort 2019-Dec-01 04:52:34 2019-Dec-01 04:52
2019-Nov-30 20:05 < 00:01 Earth 0.00219168033066049 0.00218614093257782 0.0021972195368862 18.5201920199066 18.4544320849702 2458818.336585340 0.152516885585214 274.316475349919 1.93758242643307 0.623308290060787 928.585492165804 T 2 CATAB v2.0f-lin.ifort 2019-Dec-01 04:52:34 2019-Dec-01 04:52
2019-Nov-30 22:46 < 00:01 Moon 0.000484765580533718 0.000483530611939247 0.000486062987820395 19.3428083521521 19.3393128730588 2458818.448290938 0.348625991724414 281.697581653951 2.12665590040904 -77.0496882251857 32291.4839517261 T 2 CATAB v2.0f-lin.ifort 2019-Dec-01 04:52:34 2019-Dec-01 04:52
2021-Aug-20 09:16 1_01:22 Jupiter 1.60782016606782 1.60407074165756 1.61181624003392 5.65715567499111 5.5632528168883 2459446.886093422 1522.12110632036 1022655.13037983 764.285370107836 75.0020269026402 137066.247338643 T 2 CATAB v2.0f-lin.ifort 2019-Dec-01 04:52:34 2019-Dec-01 04:52
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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