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C/1965 S2 (Alcock)
Classification: Hyperbolic Comet          SPK-ID: 1001123
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2439044.5 (1965-Oct-11.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000344770029224 0.006437  
a -3753.106898135841 70069 au
q 1.293958774951322 0.00099359 au
i 65.01079911557514 0.025865 deg
node 175.6194270002863 0.057549 deg
peri 150.520426189083 0.045956 deg
M -6.488558717525518E-5 0.0018169 deg
tp 2439059.636677806911
(1965-Oct-26.13667781)
0.035552 TDB
period n/a
n/a
n/a
n/a
d
yr
n 4.286646515368794E-6 0.00012005 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      29  
   data-arc span      30 days  
   first obs. used      1965-09-27  
   last obs. used      1965-10-27  
   two-body model      T  
   norm. resid. RMS      .63757  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:29:17  

Additional Information
 Earth MOID = .361573 au 
 Jupiter MOID = 2.25035 au 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet nuclear magnitude M2 17.2   0.3 2 from 5 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 2 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 2 autocmod 2.9c
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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