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C/2008 FK75 (Lemmon-Siding Spring)
Classification: Hyperbolic Comet          SPK-ID: 1002508
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

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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.


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Orbital Elements at Epoch 2455399.5 (2010-Jul-22.0) TDB
Reference: JPL 165 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.00270069730502 1.5982e-06  
a -1670.270196410521 0.98819 au
q 4.510894218101279 7.9078e-07 au
i 61.17552864116551 5.4732e-06 deg
node 218.2662569626132 7.2176e-06 deg
peri 80.41509594253829 1.5723e-05 deg
M -.0009993187135993826 8.8668e-07 deg
tp 2455468.711784052270
(2010-Sep-29.21178405)
0.00012882 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.443856313318956E-5 1.2814e-08 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      3621  
   data-arc span      2046 days (5.60 yr)  
   first obs. used      2008-03-31  
   last obs. used      2013-11-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   norm. resid. RMS      .71341  
   source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-18 11:57:18  

Additional Information
 Earth MOID = 4.05616 au 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 7.7   0.9 165 from 422 observations, assumed slope, autocmod 2.5c
comet total magnitude slope K1 8.   n/a 165 autocmod 2.5c
comet nuclear magnitude M2 10.4   0.7 165 from 2964 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 165 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 165 autocmod 2.5c
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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