Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
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.


[ revert to old Java-based viewer ]

:
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 
[ show covariance matrix ]

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin