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264P/Larsen
Classification: Jupiter-family Comet          SPK-ID: 1000493
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2453699.5 (2005-Nov-25.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3737353379743349 1.6245e-06  
a 3.893370812847191 5.9953e-07 au
q 2.438280556248335 6.6797e-06 au
i 25.14827693764454 7.7587e-05 deg
node 220.9675453959906 3.2326e-05 deg
peri 346.6191335549511 0.0013808 deg
M 79.76665469969763 0.0005841 deg
tp 2453077.764081210838
(2004-Mar-13.26408121)
0.0044124 TDB
period 2805.996209904322
7.68
0.00064813
1.774e-06
d
yr
n .1282966807757289 2.9634e-08 deg/d
Q 5.348461069446047 8.2359e-07 au
  Orbit Determination Parameters
   # obs. used (total)      112  
   data-arc span      5541 days (15.17 yr)  
   first obs. used      2004-04-22  
   last obs. used      2019-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .77957  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:18:04  

Additional Information
 Earth MOID = 1.43785 au 
 Jupiter MOID = .222378 au 
 T_jup = 2.789 
[ 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 12.9   0.8 17 from 48 observations, assumed slope, autocmod 2.8
comet total magnitude slope K1 14.   n/a 17 autocmod 2.8
comet nuclear magnitude M2 16.3   0.4 17 from 45 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 17 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 17 autocmod 2.8

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2011.9   264P/2012 L4       
 2004.2   264P/2004 H3       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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