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396P/Leonard (2020 F1)
Classification: Jupiter-family Comet          SPK-ID: 1003664
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | 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 2457980.5 (2017-Aug-15.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4181318189136688 7.0349e-07  
a 6.84579724829032 6.3039e-07 au
q 3.9833515929485 4.59e-06 au
i 5.433585120431198 7.1573e-05 deg
node 136.6741472164793 0.00053853 deg
peri 8.634945348104855 0.0034629 deg
M 319.0707237293207 0.0014062 deg
tp 2458724.316897618897
(2019-Aug-28.81689762)
0.025645 TDB
period 6542.360567822441
17.91
0.00090367
2.474e-06
d
yr
n .05502601030132804 7.6006e-09 deg/d
Q 9.70824290363214 8.9398e-07 au
  Orbit Determination Parameters
   # obs. used (total)      125  
   data-arc span      6622 days (18.13 yr)  
   first obs. used      2002-03-05  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .4245  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:09:52  

Additional Information
 Earth MOID = 2.99586 au 
 Jupiter MOID = .378821 au 
 T_jup = 2.835 
[ 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
comet total magnitude M1 15.6   0.7 7 2 parameter fit from 107 observations, autocmod 2.8
comet total magnitude slope K1 4.5   n/a 7 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
1936-May-08 02:40 3_01:51 Saturn 0.00688579541206569 0.00468445237132882 0.00945300618292769 8.80057189635527 1.94581654714868 2428296.611191667 4430.76733119911 283314.52112011 409.036352272253 -8.15201990220491 13.0416458325566 T 7 CATAB v2.0f-lin.ifort 2020-Aug-24 23:09:53 2020-Aug-24 23:09
1944-Feb-02 17:14 7_00:19 Jupiter 0.909893147626322 0.907455243320809 0.912354027199688 4.27041210159843 4.04655569057976 2431123.217900523 10099.1854149129 264225.565616526 570.320841848096 -64.1360392604617 125515.817989569 T 7 CATAB v2.0f-lin.ifort 2020-Aug-24 23:09:53 2020-Aug-24 23:09
1995-Mar-19 04:44 11:25 Saturn 0.692439576009264 0.691443336104831 0.693435751249294 2.97949919937998 2.8539241872962 2449795.697144829 685.174745758578 48451.7864456497 550.207312747186 -1.82396655899447 3768.09990849384 T 7 CATAB v2.0f-lin.ifort 2020-Aug-24 23:09:53 2020-Aug-24 23:09
2083-Apr-03 08:32 09:49 Saturn 1.09462024313351 1.09400811043854 1.09523236247428 3.02243681443305 2.94478113335493 2481952.855339470 588.875275524875 29896.420241146 501.397429716727 -7.64775501523606 26376.6435378916 T 7 CATAB v2.0f-lin.ifort 2020-Aug-24 23:09:53 2020-Aug-24 23:09
2125-Mar-28 02:29 13:07 Jupiter 0.507086738176999 0.505482723079578 0.508699900104056 5.46191544402254 5.14701662675574 2497286.603577373 786.611497076251 136918.808400777 1155.54594048388 52.118859018116 63272.7170389268 T 7 CATAB v2.0f-lin.ifort 2020-Aug-24 23:09:53 2020-Aug-24 23:09
2173-May-26 06:47 3_19:27 Jupiter 1.97816390022416 1.94732036584621 2.00903498343972 10.7508071425296 10.7109048069298 2514877.782600245 5487.24632066673 1582299.53709458 966.833861941293 -14.2938499414735 52169.8385987676 T 7 CATAB v2.0f-lin.ifort 2020-Aug-24 23:09:53 2020-Aug-24 23:09

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2019.7   396P/2020 F1       
 2001.7   396P/2002 E4       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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