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131P/Mueller 2
Classification: Jupiter-family Comet          SPK-ID: 1000123
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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:
Orbital Elements at Epoch 2455473.5 (2010-Oct-04.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3430115020043426 3.996e-07  
a 3.680036301866557 7.9686e-08 au
q 2.417741522532803 1.5162e-06 au
i 7.355164099867491 2.6315e-05 deg
node 214.2265569436209 0.00012166 deg
peri 179.633855733234 0.0001535 deg
M 295.6599311272084 5.7839e-05 deg
tp 2455934.345765990702
(2012-Jan-07.84576599)
0.00042651 TDB
period 2578.556079644038
7.06
8.3752e-05
2.293e-07
d
yr
n .1396130194111183 4.5347e-09 deg/d
Q 4.942331081200312 1.0702e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 5.359537383170001E-9 6.57E-10
A2 [EST] -4.591958256621174E-10 5.443E-12
A3 [SET] -3.428146535655014E-10 n/a
  Orbit Determination Parameters
   # obs. used (total)      739  
   data-arc span      10729 days (29.37 yr)  
   first obs. used      1990-09-15  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .72015  
   source      ORB  
   producer      Shantanu Naidu  
   solution date      2020-Jun-05 00:46:29  

Additional Information
 Earth MOID = 1.42349 au 
 Jupiter MOID = .512099 au 
 T_jup = 2.981 
[ 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 8.6   0.8 39 2 parameter fit from 316 observations, autocmod 2.8
comet total magnitude slope K1 23.25   n/a 39 autocmod 2.8
comet nuclear magnitude M2 16.0   0.7 39 from 278 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 39 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 39 autocmod 2.8

131P/Mueller 2          Discovered 1990-Sep-15 by Mueller, Jean at Palomar Mountain Observatory, California
discovered on plate/photo taken on discovery date
Reference: comet.disLast Updated: 2003-08-29

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Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1997.9   131P/1997 M2       
 1990.8   131P/1990 R1   1990 XXIV   1990j 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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