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C/2009 P1 (Garradd)
Classification: Hyperbolic Comet          SPK-ID: 1003031
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456220.5 (2012-Oct-20.0) TDB
Reference: JPL 77 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.00086523306325 1.2473e-06  
a -1792.047241132992 2.5829 AU
q 1.550538523934078 8.0015e-07 AU
i 106.172422705721 5.3807e-06 deg
node 325.9988780005446 3.5275e-06 deg
peri 90.7422466659238 5.4495e-05 deg
M .003915055902926285 8.4636e-06 deg
tp 2455919.159104151009
(2011-Dec-23.65910415)		 7.0352e-05 JED
period n/a
n/a		 n/a
n/a		 d
yr
n 1.299211609461801E-5 2.8089e-08 deg/d
Q n/a n/a AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.986530430903111E-8 3.833E-10
A2 [EST] -4.34597878563044E-9 1.814E-10
   Orbit Determination Parameters
   # obs. used (total)      8359  
   data-arc span      1147 days (3.14 yr)  
   first obs. used      2009-08-13  
   last obs. used      2012-10-03  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   fit RMS      .52964  
   data source      ORB  
   producer      Alan B. Chamberlin  
   solution date      2012-Oct-12 16:02:44  

Additional Information
 Earth MOID = 1.25372 AU 
 T_jup = -0.432 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 7.0 mag 2. 77 from 785 observations, assumed slope, autocmod 2.5b
comet total magnitude slope K1 8.   n/a 77 autocmod 2.5b
comet nuclear magnitude M2 9.8 mag 0.9 77 from 7078 observations, autocmod 2.5b
comet nuclear magnitude slope K2 5.   n/a 77 autocmod 2.5b
comet nuclear phase coefficient PC 0.03   n/a 77 autocmod 2.5b
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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