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280P/Larsen
Classification: Jupiter-family Comet          SPK-ID: 1000492
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2454768.5 (2008-Oct-29.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4181327320221807 6.0795e-07  
a 4.511665236987292 7.9937e-07 au
q 2.625190325476296 2.4974e-06 au
i 11.77967012151685 1.6299e-05 deg
node 131.4967467273075 0.00014942 deg
peri 104.8337410245009 0.00081673 deg
M 167.8517893863047 0.00031598 deg
tp 2453136.473511882065
(2004-May-10.97351188)
0.0026596 TDB
period 3500.287592229828
9.58
0.00093026
2.547e-06
d
yr
n .1028486918615351 2.7334e-08 deg/d
Q 6.398140148498287 1.1336e-06 au
  Orbit Determination Parameters
   # obs. used (total)      171  
   data-arc span      3715 days (10.17 yr)  
   first obs. used      2004-04-19  
   last obs. used      2014-06-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      1  
   norm. resid. RMS      .7371  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:28:13  

Additional Information
 Earth MOID = 1.64362 au 
 Jupiter MOID = .472367 au 
 T_jup = 2.809 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 3.696072985834066E-13 -1.501022882459304E-12 1.297335716902814E-9 -4.018245467997194E-11 3.946164768358546E-10 -1.095122819890491E-12
q -1.501022882459304E-12 6.237167212954751E-12 -4.685870700535564E-9 1.46733353896627E-10 -1.425346168610908E-9 5.919712320117473E-12
tp 1.297335716902814E-9 -4.685870700535564E-9 7.073510256553895E-6 -2.118043077229572E-7 2.146575679533275E-6 2.139166500111243E-9
node -4.018245467997194E-11 1.46733353896627E-10 -2.118043077229572E-7 2.232715010723868E-8 -7.988947495902948E-8 1.452145559410733E-10
peri 3.946164768358546E-10 -1.425346168610908E-9 2.146575679533275E-6 -7.988947495902948E-8 6.67039892652846E-7 4.734652964932608E-10
i -1.095122819890491E-12 5.919712320117473E-12 2.139166500111243E-9 1.452145559410733E-10 4.734652964932608E-10 2.656633497491079E-10

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 15.0   1. 34 2 parameter fit from 78 observations, autocmod 2.9c
comet total magnitude slope K1 4.5   n/a 34 autocmod 2.9c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2013.9   280P/2013 C1       
 2004.4   280P/2004 H2       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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