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94P/Russell 4
Classification: Encke-type Comet          SPK-ID: 1000075
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2456364.5 (2013-Mar-13.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .363567150661434 1.4431e-07  
a 3.5127785598432 1.399e-07 AU
q 2.235647667936432 5.5403e-07 AU
i 6.183904445397216 5.7037e-06 deg
node 70.91336693532239 0.00010524 deg
peri 92.6613043668964 0.00011469 deg
M 161.5742618247869 2.6719e-05 deg
tp 2455285.194806948297
(2010-Mar-29.69480695)
0.00014951 JED
period 2404.775767566009
6.58
0.00014366
3.933e-07
d
yr
n .1497021073047378 8.9432e-09 deg/d
Q 4.789909451749967 1.9077e-07 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 2.742767704946408E-10 2.21E-10
A2 [EST] 1.80912439871725E-11 3.629E-12
  Orbit Determination Parameters
   # obs. used (total)      1044  
   data-arc span      9958 days (27.26 yr)  
   first obs. used      1984-03-02  
   last obs. used      2011-06-07  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      .68463  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2013-Mar-03 19:37:51  

Additional Information
 Earth MOID = 1.25402 AU 
 T_jup = 3.003 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 12.9 mag 0.9 34 2 parameter fit from 333 observations, autocmod 2.5b
comet total magnitude slope K1 10.   n/a 34 autocmod 2.5b
comet nuclear magnitude M2 15.0 mag 0.6 34 from 568 observations, autocmod 2.5b
comet nuclear magnitude slope K2 5.   n/a 34 autocmod 2.5b
comet nuclear phase coefficient PC 0.03   n/a 34 autocmod 2.5b

94P/Russell 4          Discovered 1984-Mar-07 by Russell, Kenneth S. at U. K. Schmidt Telescope Unit, Siding Spring
discovered on plate/photo taken on discovery date
Reference: comet.disLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1990.5   94P/1989 X2   1990 XI   1989g1 
 1983.9   94P/1984 E1   1984 I   1984d 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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