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C/2011 P2 (PANSTARRS)
Classification: Chiron-type Comet          SPK-ID: 1003141
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455966.5 (2012-Feb-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .369819231884631 4.3932e-05  
a 9.756097408305147 0.00089888 au
q 6.148104958574098 0.00017674 au
i 8.989635670048697 5.5952e-05 deg
node 204.0185248369797 0.00062708 deg
peri 76.38463321861438 0.0060984 deg
M 16.60803148908745 0.0045501 deg
tp 2455453.014389939974
(2010-Sep-13.51438994)
0.073485 TDB
period 11130.44732261442
30.47
1.5383
0.004212
d
yr
n .03234371356024172 4.47e-06 deg/d
Q 13.36408985803619 0.0012313 au
  Orbit Determination Parameters
   # obs. used (total)      58  
   data-arc span      813 days (2.23 yr)  
   first obs. used      2011-06-22  
   last obs. used      2013-09-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      4  
   norm. resid. RMS      .43443  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:31:54  

Additional Information
 Earth MOID = 5.14701 au 
 Jupiter MOID = 1.17469 au 
 T_jup = 3.047 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 6.7   0.6 12 2 parameter fit from 47 observations, autocmod 2.9c
comet total magnitude slope K1 12.   n/a 12 autocmod 2.9c
comet nuclear magnitude M2 12.4   0.3 12 from 4 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 12 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 12 autocmod 2.9c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2010.7   C/2011 P2       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
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