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126P/IRAS
Classification: Jupiter-family Comet*          SPK-ID: 1000047
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456364.5 (2013-Mar-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6957724986244791 9.0879e-08  
a 5.646476269897362 3.4217e-07 au
q 1.717813367167046 5.0727e-07 au
i 45.80272010221584 2.1931e-05 deg
node 357.7993210662704 2.315e-05 deg
peri 356.7748973871472 7.622e-05 deg
M 81.89487642320886 2.9133e-05 deg
tp 2455249.643631749198
(2010-Feb-22.14363175)
0.00030199 TDB
period 4900.774139962527
13.42
0.00044547
1.22e-06
d
yr
n .07345778232553944 6.6772e-09 deg/d
Q 9.575139172627678 5.8024e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -6.606209829718528E-10 1.22E-12
  Orbit Determination Parameters
   # obs. used (total)      360  
   data-arc span      10084 days (27.61 yr)  
   first obs. used      1983-06-30  
   last obs. used      2011-02-07  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   norm. resid. RMS      1.0116  
   source      ORB  
   producer      Ryan S. Park  
   solution date      2013-Mar-03 19:28:12  

Additional Information
 Earth MOID = .712427 au 
 T_jup = 1.965 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 8.8   0.7 17 2 parameter fit from 85 observations, autocmod 2.5b
comet total magnitude slope K1 17.   n/a 17 autocmod 2.5b
comet nuclear magnitude M2 14.4   0.8 17 from 82 observations, autocmod 2.5b
comet nuclear magnitude slope K2 5.   n/a 17 autocmod 2.5b
comet nuclear phase coefficient PC 0.03   n/a 17 autocmod 2.5b
diameter diameter 3.2 km n/a Lamy,P.L.,Toth,I.,Fernandez,Y.R.,Weaver,H.A. (to be published)  

126P/IRAS          Discovered 1983-Jun-28 at Infrared Astronomical Satellite
Reference: comet.disLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1996.7   126P/1996 P1       
 1983.3   126P/1983 M1   1983 XIV   1983j 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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