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C/1948 T1 (Wirtanen)
Classification: Hyperbolic Comet          SPK-ID: 1001071
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2433246.5 (1949-Nov-26.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000697151833784 0.00016643  
a -4687.881836940759 1118.6 au
q 3.268165419185665 0.00068107 au
i 155.0784260321153 0.0012886 deg
node 122.1254364026564 0.00067462 deg
peri 73.54940658496193 0.010955 deg
M .002499942653426478 0.00089474 deg
tp 2432432.375251575893
(1947-Sep-03.87525158)
0.053162 TDB
period n/a
n/a
n/a
n/a
d
yr
n 3.07071202326866E-6 1.0991e-06 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      19  
   data-arc span      679 days (1.86 yr)  
   first obs. used      1948-10-07  
   last obs. used      1950-08-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .2039  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 11:11:14  

Additional Information
 Earth MOID = 2.39509 au 
 Jupiter MOID = .135262 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 6.0   01. 1 from 5 observations, assumed slope, autocmod 2.8
comet total magnitude slope K1 8.25   n/a 1 autocmod 2.8
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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