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162P/Siding Spring
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1000525
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2454382.5 (2007-Oct-09.0) TDB
Reference: JPL 122 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5960872429177333 3.0086e-08  
a 3.050125964918546 1.4089e-08 au
q 1.231984787938459 9.2009e-08 au
i 27.82664613395114 6.8028e-06 deg
node 31.26135952828848 7.8218e-06 deg
peri 356.3730265286378 1.2576e-05 deg
M 196.8543965676426 2.8984e-06 deg
tp 2455264.255066330837
2.02e-05 TDB
period 1945.696465002892
n .1850237210558251 1.2819e-09 deg/d
Q 4.868267141898633 2.2487e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2194  
   data-arc span      11165 days (30.57 yr)  
   first obs. used      1990-03-23  
   last obs. used      2020-10-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47987  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-18 17:46:45  

Additional Information
 Earth MOID = .237703 au 
 Jupiter MOID = .58314 au 
 T_jup = 2.793 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 9.051690970645871E-16 -2.762890678507311E-15 -1.763372993666369E-13 1.037913684865528E-13 -2.001729567016979E-13 -6.07380968871204E-14
q -2.762890678507311E-15 8.465680792730352E-15 6.30986898997199E-13 -3.144240038786559E-13 6.257798201494977E-13 1.878891660065945E-13
tp -1.763372993666369E-13 6.30986898997199E-13 4.080424490947273E-10 -1.605725551020963E-11 1.698503765458294E-10 1.685337770655081E-11
node 1.037913684865528E-13 -3.144240038786559E-13 -1.605725551020963E-11 6.118093112472257E-11 -5.848902684294814E-11 -6.41772476826296E-12
peri -2.001729567016979E-13 6.257798201494977E-13 1.698503765458294E-10 -5.848902684294814E-11 1.581670003236443E-10 9.135038239931786E-12
i -6.07380968871204E-14 1.878891660065945E-13 1.685337770655081E-11 -6.41772476826296E-12 9.135038239931786E-12 4.62785840086214E-11

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 15.1   0.6 122 2 parameter fit from 690 observations, autocmod 2.8
comet total magnitude slope K1 4.5   n/a 122 autocmod 2.8
rotation period rot_per 32.853 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Kokotankekova, R.; Snodgrass, C.; Lacerda, P.; Green S.F.; et al. (2017) Mon. Not. Royal Ast. Soc. 471, 2974-3007.]

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Alternate Designations
 2004.9   162P/2004 TU12       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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