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C/2010 X1 (Elenin)
Classification: Hyperbolic Comet          SPK-ID: 1003113
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

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 2455651.5 (2011-Mar-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000067251452369 1.8497e-06  
a -7173.388484905965 197.29 au
q .4824207940167428 2.655e-06 au
i 1.83956811421481 4.5064e-05 deg
node 323.2351474030079 0.00089743 deg
peri 343.7981179505746 0.00089507 deg
M -.0002655942158359592 1.0957e-05 deg
tp 2455815.219747320076
(2011-Sep-10.71974732)
0.0003604 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.62224911889655E-6 6.6925e-08 deg/d
Q n/a n/a au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -4.779002741230586E-8 1.175E-8
A2 [EST] 6.325626323697817E-8 7.967E-9
  Orbit Determination Parameters
   # obs. used (total)      2235  
   data-arc span      271 days  
   first obs. used      2010-12-10  
   last obs. used      2011-09-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .59392  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:31:47  

Additional Information
 Earth MOID = .0306307 au 
 Jupiter MOID = .148355 au 
 T_jup = 0.861 
[ hide covariance matrix ]
Orbit Covariance (8×8)
  e q tp node peri i A1 A2
e 3.421213644343758E-12 5.239343490310585E-13 -4.444529690791157E-10 -1.15943678773922E-11 -2.14711424730909E-10 -4.894450723328434E-13 3.633535793575233E-16 9.599931429455893E-16
q 5.239343490310585E-13 7.049238111892246E-12 -6.648130716014162E-10 -3.521912323408918E-10 -1.288317469464823E-10 -2.31419892687659E-11 1.954380492835783E-14 -1.363456629589949E-14
tp -4.444529690791157E-10 -6.648130716014162E-10 1.298846137526576E-7 3.65813950514255E-8 3.263582295341918E-8 2.41908163997235E-9 -1.813484391475103E-12 1.052130649711218E-12
node -1.15943678773922E-11 -3.521912323408918E-10 3.65813950514255E-8 8.053859679066225E-7 -7.814150807425563E-7 3.959003443608459E-8 -1.543536481980533E-12 1.041955528891137E-12
peri -2.14711424730909E-10 -1.288317469464823E-10 3.263582295341918E-8 -7.814150807425563E-7 8.011497843518683E-7 -3.803322333088599E-8 2.670635521713306E-13 -2.251194282319612E-13
i -4.894450723328434E-13 -2.31419892687659E-11 2.41908163997235E-9 3.959003443608459E-8 -3.803322333088599E-8 2.030793222002521E-9 -9.276897126627704E-14 6.274664422971576E-14
A1 3.633535793575233E-16 1.954380492835783E-14 -1.813484391475103E-12 -1.543536481980533E-12 2.670635521713306E-13 -9.276897126627704E-14 1.381441287147014E-16 -9.289267050977532E-17
A2 9.599931429455893E-16 -1.363456629589949E-14 1.052130649711218E-12 1.041955528891137E-12 -2.251194282319612E-13 6.274664422971576E-14 -9.289267050977532E-17 6.34670252527217E-17

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 12.6   0.8 39 2 parameter fit from 353 observations, autocmod 2.9c
comet total magnitude slope K1 6.25   n/a 39 autocmod 2.9c

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