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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 2456978.5 (2014-Nov-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3643393443019072 1.4405e-07  
a 3.510541557828554 1.4108e-07 AU
q 2.231513148504703 5.5279e-07 AU
i 6.184650321732615 5.713e-06 deg
node 70.89373291605817 0.00010592 deg
peri 92.71652076646342 0.00011466 deg
M 253.5048108346487 2.946e-05 deg
tp 2457689.201272910609
(2016-Oct-27.70127291)
0.00022942 JED
period 2402.479025137617
6.58
0.00014483
3.965e-07
d
yr
n .1498452208045308 9.033e-09 deg/d
Q 4.789569967152405 1.9248e-07 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 3.310616894907654E-10 2.173E-10
A2 [EST] 1.484925563664199E-11 3.714E-12
  Orbit Determination Parameters
   # obs. used (total)      1053  
   data-arc span      11158 days (30.55 yr)  
   first obs. used      1984-03-02  
   last obs. used      2014-09-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .67956  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2014-Nov-07 11:29:34  

Additional Information
 Earth MOID = 1.24922 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 13.3 mag 0.9 35 2 parameter fit from 337 observations, autocmod 2.6
comet total magnitude slope K1 9.   n/a 35 autocmod 2.6

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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