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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 2455966.5 (2012-Feb-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3698225913482697 4.4504e-05  
a 9.756153027484956 0.00091391 AU
q 6.148107233270202 0.00018003 AU
i 8.989641673691759 5.6475e-05 deg
node 204.0184593599947 0.00062686 deg
peri 76.3847935193711 0.0062085 deg
M 16.60784108940136 0.004633 deg
tp 2455453.015885698246
(2010-Sep-13.51588570)
0.074794 JED
period 11130.54250420303
30.47
1.564
0.004282
d
yr
n .03234343697659477 4.5447e-06 deg/d
Q 13.36419882169971 0.0012519 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      .4475  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 19:44:46  

Additional Information
 Earth MOID = 5.14701 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 10 2 parameter fit from 44 observations, autocmod 2.5c
comet total magnitude slope K1 12.   n/a 10 autocmod 2.5c
comet nuclear magnitude M2 12.4 mag 0.3 10 from 4 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 10 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 10 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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