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409P/LONEOS-Hill
Classification: Jupiter-family Comet          SPK-ID: 1002317
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 2456035.5 (2012-Apr-18.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7094436856895068 8.5847e-08  
a 6.057909664111031 2.2113e-08 au
q 1.760163904430019 5.1659e-07 au
i 17.11250834529895 1.427e-05 deg
node 143.7568556024276 2.0534e-05 deg
peri 15.06390565744736 8.1195e-05 deg
M 147.9770351487735 1.0659e-05 deg
tp 2453796.910631229243
(2006-Mar-02.41063123)
0.00015615 TDB
period 5446.062437642726
14.91
2.982e-05
8.164e-08
d
yr
n .06610280438793911 3.6195e-10 deg/d
Q 10.35565542379204 3.7802e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1175  
   data-arc span      5590 days (15.30 yr)  
   first obs. used      2005-12-04  
   last obs. used      2021-03-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60493  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:28:48  

Additional Information
 Earth MOID = .775613 au 
 Jupiter MOID = .961895 au 
 T_jup = 2.312 
[ 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 13.9   0.6 35 2 parameter fit from 710 observations, autocmod 2.9c
comet total magnitude slope K1 10.   n/a 35 autocmod 2.9c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2021.1   409P/2020 V1       
 2006.2   409P/2005 XA54       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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