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C/2009 R1 (McNaught)
Classification: Hyperbolic Comet          SPK-ID: 1003036
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | 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.


Orbital Elements at Epoch 2455297.5 (2010-Apr-11.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000413202490796 2.36e-06  
a -980.3592752125166 5.5957 au
q .4050868943926803 1.514e-06 au
i 77.03076498095443 8.5241e-05 deg
node 322.6226629291746 2.2567e-05 deg
peri 130.6931027466904 0.00023419 deg
M -.00265470905718023 2.2728e-05 deg
tp 2455380.178150077313
(2010-Jul-02.67815008)
3.2469e-05 TDB
period n/a
n/a
n/a
n/a
d
yr
n 3.210895568778196E-5 2.7491e-07 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      751  
   data-arc span      315 days  
   first obs. used      2009-08-18  
   last obs. used      2010-06-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .70513  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:31:34  

Additional Information
 Earth MOID = .446156 au 
 Jupiter MOID = 1.22068 au 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 9.9   2. 29 2 parameter fit from 162 observations, autocmod 2.9c
comet total magnitude slope K1 6.75   n/a 29 autocmod 2.9c

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