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C/2015 G2 (MASTER)
Classification: Hyperbolic Comet          SPK-ID: 1003383
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457250.5 (2015-Aug-16.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000395105483913 2.4906e-06  
a -1973.798170638304 12.44 au
q .7798584813568049 1.196e-06 au
i 147.5627212046803 4.9992e-05 deg
node 110.058839611536 3.7752e-05 deg
peri 257.4587835853224 0.00013251 deg
M .0009465133992715475 8.9468e-06 deg
tp 2457166.287452427172
(2015-May-23.78745243)
0.00020144 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.12395768392233E-5 1.0626e-07 deg/d
Q n/a n/a au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.209407455040085E-8 1.534E-9
A2 [EST] 5.904124770839543E-9 1.021E-9
A3 [EST] -4.333174868470549E-9 3.827E-10
  Orbit Determination Parameters
   # obs. used (total)      562  
   data-arc span      314 days  
   first obs. used      2015-03-30  
   last obs. used      2016-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .60761  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:33:09  

Additional Information
 Earth MOID = .145728 au 
 Jupiter MOID = 1.38965 au 
[ hide covariance matrix ]
Orbit Covariance (9×9)
  e q tp node peri i A1 A2 A3
e 6.202883356735796E-12 1.633807654877803E-12 3.386183674100424E-10 2.853743727036538E-11 3.019670293924506E-10 1.262283418546425E-11 1.520102979509804E-15 1.755915410683058E-15 -5.256889890822297E-16
q 1.633807654877803E-12 1.430326467110467E-12 1.022873275173023E-11 7.118956226350787E-12 1.172785274995516E-10 -3.193351578559625E-12 -5.875071018338028E-16 1.199181900012597E-16 -1.095320594551854E-17
tp 3.386183674100424E-10 1.022873275173023E-11 4.057752810454493E-8 1.079742520813386E-9 1.574916041161347E-8 2.639566019987551E-9 2.853464327956031E-13 2.037861590905085E-13 -6.748872904921492E-14
node 2.853743727036538E-11 7.118956226350787E-12 1.079742520813386E-9 1.425200449785354E-9 2.36554389468854E-9 1.069729092702898E-9 1.973171419371445E-15 4.564670514454591E-15 -6.216602043337698E-16
peri 3.019670293924506E-10 1.172785274995516E-10 1.574916041161347E-8 2.36554389468854E-9 1.755782712236283E-8 1.455942087715525E-9 5.198018883582045E-14 8.264204053603669E-14 -2.379974352589062E-14
i 1.262283418546425E-11 -3.193351578559625E-12 2.639566019987551E-9 1.069729092702898E-9 1.455942087715525E-9 2.499156701494768E-9 1.839599942235668E-14 1.134204284603479E-14 -2.023309649213562E-17
A1 1.520102979509804E-15 -5.875071018338028E-16 2.853464327956031E-13 1.973171419371445E-15 5.198018883582045E-14 1.839599942235668E-14 2.351672448548389E-18 1.419793325043222E-18 -4.956556899484644E-19
A2 1.755915410683058E-15 1.199181900012597E-16 2.037861590905085E-13 4.564670514454591E-15 8.264204053603669E-14 1.134204284603479E-14 1.419793325043222E-18 1.041598453484759E-18 -3.491460333469439E-19
A3 -5.256889890822297E-16 -1.095320594551854E-17 -6.748872904921492E-14 -6.216602043337698E-16 -2.379974352589062E-14 -2.023309649213562E-17 -4.956556899484644E-19 -3.491460333469439E-19 1.464733400671454E-19

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 12.0   1. 28 2 parameter fit from 178 observations, autocmod 2.9c
comet total magnitude slope K1 6.   n/a 28 autocmod 2.9c

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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