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149P/Mueller 4
Classification: Jupiter-family Comet          SPK-ID: 1000139
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456317.5 (2013-Jan-25.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3882006908643104 1.4435e-06  
a 4.327037088399488 2.2191e-07 au
q 2.647278301287313 6.3117e-06 au
i 29.75161279104621 4.043e-05 deg
node 145.2534052141308 0.00010448 deg
peri 43.58389119493906 0.00119 deg
M 117.3146979319473 0.00045905 deg
tp 2455246.142832742631
(2010-Feb-18.64283274)
0.0041746 TDB
period 3287.640739069077
9.00
0.00025291
6.924e-07
d
yr
n .1095010156438009 8.4236e-09 deg/d
Q 6.006795875511664 3.0806e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -1.648633622779726E-8 1.293E-8
A2 [EST] -7.63660369959429E-11 3.971E-11
  Orbit Determination Parameters
   # obs. used (total)      471  
   data-arc span      9974 days (27.31 yr)  
   first obs. used      1992-04-09  
   last obs. used      2019-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .63464  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:05:28  

Additional Information
 Earth MOID = 1.72327 au 
 Jupiter MOID = .111167 au 
 T_jup = 2.662 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 12.3   0.8 13 from 217 observations, assumed slope, autocmod 2.8
comet total magnitude slope K1 12.   n/a 13 autocmod 2.8
comet nuclear magnitude M2 15.7   0.5 13 from 129 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 13 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 13 autocmod 2.8
rotation period rot_per 11.88 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Kokotankekova, R.; Snodgrass, C.; Lacerda, P.; Green S.F.; et al. (2017) Mon. Not. Royal Ast. Soc. 471, 2974-3007.]

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1992.1   149P/1992 G3   1992 IV   1992g 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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