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323P/SOHO
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1002073
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 2459256.5 (2021-Feb-11.0) TDB
Reference: JPL K212/4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9848146578805561 4.8498e-08  
a 2.581880228784671 2.7253e-06 au
q .0392067345855233 1.2109e-07 au
i 5.369934960161294 5.867e-05 deg
node 324.2293946858459 0.00034977 deg
peri 353.1739956685902 0.00034735 deg
M 5.789373596995373 9.5541e-06 deg
tp 2459232.131340479534
(2021-Jan-17.63134048)
5.1907e-06 TDB
period 1515.313752064768
4.15
0.0023992
6.569e-06
d
yr
n .2375745613800863 3.7616e-07 deg/d
Q 5.124553722983819 5.4092e-06 au
  Orbit Determination Parameters
   # obs. used (total)      66  
   data-arc span      1547 days (4.24 yr)  
   first obs. used      2016-11-23  
   last obs. used      2021-02-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .31349  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2021-Mar-29 10:06:47  

Additional Information
 Earth MOID = .0221701 au 
 Jupiter MOID = .220598 au 
 T_jup = 2.259 
[ 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 24.3   0.7 K212/4 2 parameter fit from 27 observations, autocmod 2.9c
comet total magnitude slope K1 4.5   n/a K212/4 autocmod 2.9c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2012.7   323P/2012 Q2       
 2008.6   323P/2008 K10       
 2004.5   323P/2004 E2       
 2000.3   323P/1999 X3       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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