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119P/Parker-Hartley
Classification: Jupiter-family Comet          SPK-ID: 1000120
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2455072.5 (2009-Aug-29.0) TDB
Reference: JPL 50 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2906392019772506 1.015e-07  
a 4.283706862229221 8.7533e-08 au
q 3.038693718286448 4.7275e-07 au
i 5.191035411803636 8.0316e-06 deg
node 244.0747716037161 8.0591e-05 deg
peri 181.0994003771245 9.4066e-05 deg
M 173.3366942572703 3.101e-05 deg
tp 2453513.248925769290
(2005-May-22.74892577)
0.00028472 TDB
period 3238.381746740342
8.87
9.9259e-05
2.718e-07
d
yr
n .1111666344964936 3.4073e-09 deg/d
Q 5.528720006171993 1.1297e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 2.870482813624359E-8 7.115E-9
A2 [EST] 9.824804955318427E-9 2.073E-10
  Orbit Determination Parameters
   # obs. used (total)      1716  
   data-arc span      10777 days (29.51 yr)  
   first obs. used      1986-09-29  
   last obs. used      2016-04-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .73025  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 11:13:20  

Additional Information
 Earth MOID = 2.0524 au 
 Jupiter MOID = .177476 au 
 T_jup = 2.944 
[ 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 12.1   0.9 50 2 parameter fit from 604 observations, autocmod 2.8
comet total magnitude slope K1 7.75   n/a 50 autocmod 2.8
comet nuclear magnitude M2 13.9   0.6 50 from 894 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 50 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 50 autocmod 2.8

119P/Parker-Hartley          Discovered 1989-Mar-02 by Parker, Quentin A. and Hartley, Malcolm at U. K. Schmidt Telescope, Siding Spring Obs.
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 
 1996.5   119P/1995 M2       
 1987.7   119P/1989 E1   1987 XXXVI   1989i 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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