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185P/Petriew (2001 Q2)
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1000349
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

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.


:
Orbital Elements at Epoch 2456473.5 (2013-Jun-30.0) TDB
Reference: JPL K183/6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6993345995045035 9.9391e-08  
a 3.099710539738648 3.9085e-08 au
q .9319757108506322 3.1047e-07 au
i 14.0071028125114 1.8042e-05 deg
node 214.0912549894404 7.4385e-05 deg
peri 181.9391939260816 7.7506e-05 deg
M 57.87363785086353 5.4838e-06 deg
tp 2456153.051370563047
(2012-Aug-13.55137056)
3.2625e-05 TDB
period 1993.334286235504
5.46
3.7701e-05
1.032e-07
d
yr
n .1806019203531964 3.4159e-09 deg/d
Q 5.267445368626664 6.6418e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] 1.474775215645868E-10 3.857E-13
  Orbit Determination Parameters
   # obs. used (total)      735  
   data-arc span      4468 days (12.23 yr)  
   first obs. used      2007-01-11  
   last obs. used      2019-04-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .72899  
   source      ORB  
   producer      Javier Roa  
   solution date      2019-May-15 16:27:13  

Additional Information
 Earth MOID = .0617438 au 
 Jupiter MOID = .182762 au 
 T_jup = 2.749 
[ hide covariance matrix ]
Orbit Covariance (7×7)
  e q tp node peri i A2
e 9.878493927327293E-15 -3.083656356658869E-14 -3.300688066276993E-13 -6.288773287152852E-13 -7.773217389880516E-13 -1.58109099486539E-13 -9.225677719237613E-21
q -3.083656356658869E-14 9.639233949658147E-14 8.494475963162592E-13 1.995605835450153E-12 2.371143359670392E-12 4.988401954837194E-13 3.187731963711517E-20
tp -3.300688066276993E-13 8.494475963162592E-13 1.064377131327515E-9 -2.354125302673943E-10 9.147038666201068E-10 5.480629200965939E-12 -5.761985647844098E-18
node -6.288773287152852E-13 1.995605835450153E-12 -2.354125302673943E-10 5.533167439031147E-9 -5.28607768400692E-9 -1.759477955359236E-10 2.136358193223294E-18
peri -7.773217389880516E-13 2.371143359670392E-12 9.147038666201068E-10 -5.28607768400692E-9 6.007192375788319E-9 1.998832137210698E-10 -1.672620861183221E-18
i -1.58109099486539E-13 4.988401954837194E-13 5.480629200965939E-12 -1.759477955359236E-10 1.998832137210698E-10 3.255250595540427E-10 2.365160688803133E-19
A2 -9.225677719237613E-21 3.187731963711517E-20 -5.761985647844098E-18 2.136358193223294E-18 -1.672620861183221E-18 2.365160688803133E-19 1.487799164319524E-25

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 13.4   1. K183/6 2 parameter fit from 144 observations, autocmod 2.6q
comet total magnitude slope K1 10.   n/a K183/6 autocmod 2.6q
comet nuclear magnitude M2 16.6   01. K183/6 from 456 observations, autocmod 2.6q
comet nuclear magnitude slope K2 5.   n/a K183/6 autocmod 2.6q
comet nuclear phase coefficient PC 0.03   n/a K183/6 autocmod 2.6q

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2007.2   185P/2007 A3       
 2001.7   185P/2001 Q2       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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