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JPL Small-Body Database Browser
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79P/du Toit-Hartley
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1000022
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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:
Orbital Elements at Epoch 2456558.5 (2013-Sep-23.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6185134899509153 1.7001e-06  
a 2.945858611714987 1.4079e-05 au
q 1.123805320881192 1.2004e-06 au
i 3.145618792107812 2.548e-05 deg
node 280.6403368540958 0.0007548 deg
peri 281.689317338125 0.00031317 deg
M 5.987205298911507 0.00046136 deg
tp 2456527.785890768675
(2013-Aug-23.28589077)
0.0021492 TDB
period 1846.784730312691
5.06
0.01324
3.625e-05
d
yr
n .1949333856247805 1.3975e-06 deg/d
Q 4.767911902548781 2.2788e-05 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -4.871755274376041E-11 6.081E-10
A2 [EST] -3.296388071159945E-11 1.561E-11
  Orbit Determination Parameters
   # obs. used (total)      198  
   data-arc span      3684 days (10.09 yr)  
   first obs. used      2003-03-04  
   last obs. used      2013-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      3  
   norm. resid. RMS      .86966  
   source      ORB  
   producer      Ryan S. Park  
   solution date      2013-Sep-13 11:15:48  

Additional Information
 Earth MOID = .134779 au 
 T_jup = 2.947 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 15.0   1. 16 from 115 observations, assumed slope, autocmod 2.5c
comet total magnitude slope K1 15.   n/a 16 autocmod 2.5c
diameter diameter 2.8 km n/a Lamy,P.L.;Toth,I.;Fernandez,Y.R.;Weaver,H.A. (2004) Comets II, pp. 223-264  

79P/du Toit-Hartley          Discovered 1945-Apr-09 by du Toit, D.
Reference: comet.disLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1988.4       1987 IX   1986q 
 1983.3   79P/1982 C1-A   1982 II   1982b 
 1942.9   79P/1945 G1   1945 II   1945c 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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