Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2457375.5 (2015-Dec-19.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3645474466609431 1.4045e-07  
a 3.509474721117858 1.4279e-07 au
q 2.230104672413218 5.4502e-07 au
i 6.185717904884385 5.7115e-06 deg
node 70.88812041718793 0.00010171 deg
peri 92.77539076444052 0.00010913 deg
M 312.9699830189154 3.1526e-05 deg
tp 2457689.214245027386
(2016-Oct-27.71424503)
0.00022662 JED
period 2401.383955597596
6.57
0.00014656
4.013e-07
d
yr
n .1499135526248705 9.1493e-09 deg/d
Q 4.788844769822499 1.9484e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 3.097210569878713E-10 2.098E-10
A2 [EST] 1.454785345984464E-11 3.63E-12
  Orbit Determination Parameters
   # obs. used (total)      1079  
   data-arc span      11587 days (31.72 yr)  
   first obs. used      1984-03-02  
   last obs. used      2015-11-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .67365  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2015-Dec-09 11:25:58  

Additional Information
 Earth MOID = 1.24899 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 13.0 mag 0.9 37 2 parameter fit from 360 observations, autocmod 2.6
comet total magnitude slope K1 10.   n/a 37 autocmod 2.6
comet nuclear magnitude M2 15.0 mag 0.6 37 from 571 observations, autocmod 2.6
comet nuclear magnitude slope K2 5.   n/a 37 autocmod 2.6
comet nuclear phase coefficient PC 0.03   n/a 37 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Feb-07 10:36 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin