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JPL Small-Body Database Browser
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80P/Peters-Hartley
Classification: Jupiter-family Comet          SPK-ID: 1000067
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2456908.5 (2014-Sep-08.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5989902415048468 1.9223e-06  
a 4.021659589584823 1.0432e-05 au
q 1.612724740769127 6.2601e-06 au
i 29.92275599280534 0.00011866 deg
node 259.8892998524929 0.00019231 deg
peri 339.1311051464525 0.00086019 deg
M 352.2961693179048 0.00032108 deg
tp 2456971.539188830275
(2014-Nov-10.03918883)
0.0028567 TDB
period 2945.821230422856
8.07
0.011462
3.138e-05
d
yr
n .1222070084505176 4.7549e-07 deg/d
Q 6.43059443840052 1.668e-05 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 7.370111226638529E-9 1.014E-9
A2 [EST] -7.828764110205031E-10 3.122E-12
A3 [EST] -1.023511746192518E-9 4.164E-10
  Orbit Determination Parameters
   # obs. used (total)      48  
   data-arc span      11703 days (32.04 yr)  
   first obs. used      1982-07-11  
   last obs. used      2014-07-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      2  
   norm. resid. RMS      .81327  
   source      ORB  
   producer      Ryan S. Park  
   solution date      2014-Aug-29 12:57:29  

Additional Information
 Earth MOID = .620458 au 
 Jupiter MOID = .454638 au 
 T_jup = 2.514 
[ 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 9.3   0.6 17 2 parameter fit from 17 observations, autocmod 2.5c
comet total magnitude slope K1 27.   n/a 17 autocmod 2.5c

80P/Peters-Hartley          Discovered 1846-Jun-26 by Peters, C. at Naples (Capodimonte)
Reference: http://articles.adsabs.harvard.edu/pdf/1846AN.....24..387PLast Updated: 2018-12-10

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1990.7       1990 IX   1990d 
 1982.6   80P/1982 N1   1982 III   1982h 
 1845.5   80P/1846 M1   1846 VI   
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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