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C/2011 A3 (Gibbs)
Classification: Comet          SPK-ID: 1003119
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2455749.5 (2011-Jul-07.0) TDB
Reference: JPL 62 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9979938825751231 5.7661e-06  
a 1168.845517257402 3.3595 au
q 2.344841359159311 2.5234e-06 au
i 26.07435262883368 1.3924e-05 deg
node 124.895271952043 8.0066e-05 deg
peri 141.1610776277263 0.00011996 deg
M 359.9960022203701 1.7238e-05 deg
tp 2455911.587845746479
(2011-Dec-16.08784575)
0.00027579 TDB
period 14596008.25244752
39961.69
62928
172.3
d
yr
n 2.466427764177468E-5 1.0634e-07 deg/d
Q 2335.346193155645 6.7123 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 8.038421668714041E-8 6.208E-9
A2 [EST] 4.798933022351107E-8 7.375E-9
A3 [EST] -5.092356199325596E-9 1.67E-9
  Orbit Determination Parameters
   # obs. used (total)      1747  
   data-arc span      995 days (2.72 yr)  
   first obs. used      2011-01-15  
   last obs. used      2013-10-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .53514  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-16 12:05:53  

Additional Information
 Earth MOID = 1.38479 au 
 Jupiter MOID = 1.52955 au 
 T_jup = 1.709 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 9.9   0.8 62 2 parameter fit from 320 observations, autocmod 2.9c
comet total magnitude slope K1 8.5   n/a 62 autocmod 2.9c
comet nuclear magnitude M2 12.2   0.5 62 from 1327 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 62 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 62 autocmod 2.9c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2012.0   C/2011 A3       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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