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200P/Larsen
Classification: Jupiter-family Comet          SPK-ID: 1000169
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.


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Orbital Elements at Epoch 2454461.5 (2007-Dec-27.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3332444293860415 6.1151e-07  
a 4.90767838556881 1.1669e-07 au
q 3.272221902359723 2.9758e-06 au
i 12.1210582408734 4.1804e-05 deg
node 234.8196348909933 0.00015012 deg
peri 133.690307828843 0.00020902 deg
M 338.0621926868761 7.3198e-05 deg
tp 2454703.493268445084
(2008-Aug-24.99326845)
0.00081353 TDB
period 3971.115955062361
10.87
0.00014164
3.878e-07
d
yr
n .09065461801513844 3.2334e-09 deg/d
Q 6.543134868777898 1.5558e-07 au
  Orbit Determination Parameters
   # obs. used (total)      604  
   data-arc span      8082 days (22.13 yr)  
   first obs. used      1997-11-03  
   last obs. used      2019-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67128  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-09 08:46:01  

Additional Information
 Earth MOID = 2.28868 au 
 Jupiter MOID = .0954587 au 
 T_jup = 2.851 
[ 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 10.7   1. 42 from 221 observations, assumed slope, autocmod 2.8
comet total magnitude slope K1 10.   n/a 42 autocmod 2.8
comet nuclear magnitude M2 14.1   0.8 42 from 212 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 42 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 42 autocmod 2.8

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2008.6   200P/2008 L1       
 1997.8   200P/1997 V1       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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