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

[ show orbit diagram ]
Orbital Elements at Epoch 2455960.5 (2012-Feb-03.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3698409299966212 4.4504e-05  
a 9.756454097829494 0.00091395 AU
q 6.148118040818888 0.00018 AU
i 8.989642167171093 5.5679e-05 deg
node 204.0186552355266 0.00062544 deg
peri 76.38583892125375 0.0062078 deg
M 16.41238376151757 0.0046059 deg
tp 2455453.035580029746
(2010-Sep-13.53558003)
0.074785 JED
period 11131.05773322468
30.48
1.5641
0.004282
d
yr
n .03234193987921285 4.5445e-06 deg/d
Q 13.3647901548401 0.001252 AU
  Orbit Determination Parameters
   # obs. used (total)      55  
   data-arc span      813 days (2.23 yr)  
   first obs. used      2011-06-22  
   last obs. used      2013-09-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      4  
   fit RMS      .44786  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Sep-23 20:55:11  

Additional Information
 Earth MOID = 5.14657 AU 
 T_jup = 3.047 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 6.7 mag 0.6 9 2 parameter fit from 44 observations, autocmod 2.5c
comet total magnitude slope K1 12.   n/a 9 autocmod 2.5c
comet nuclear magnitude M2 12.4 mag 0.3 9 from 4 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 9 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 9 autocmod 2.5c

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