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JPL Small-Body Database Browser
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C/2009 R1 (McNaught)
Classification: Hyperbolic Comet          SPK-ID: 1003036
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455299.5 (2010-Apr-13.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000406751994624 2.11e-06  
a -995.8983735013639 5.163 au
q .4050836498645098 1.3504e-06 au
i 77.03083803769042 7.5951e-05 deg
node 322.622710199475 2.1177e-05 deg
peri 130.6936771145205 0.00020966 deg
M -.002530103067458741 1.9674e-05 deg
tp 2455380.178288002300
(2010-Jul-02.67828800)		 2.9972e-05 TDB
period n/a
n/a		 n/a
n/a		 d
yr
n 3.136039608806042E-5 2.4387e-07 deg/d
Q n/a n/a au
   Orbit Determination Parameters
   # obs. used (total)      765  
   data-arc span      344 days  
   first obs. used      2009-07-20  
   last obs. used      2010-06-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   norm. resid. RMS      .79029  
   source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 19:44:24  

Additional Information
 Earth MOID = .446111 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 9.8   2. 28 2 parameter fit from 162 observations, autocmod 2.5c
comet total magnitude slope K1 7.   n/a 28 autocmod 2.5c

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