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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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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.


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Orbital Elements at Epoch 2454334.5 (2007-Aug-22.0) TDB
Reference: JPL 121 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5961126557627628 3.0467e-08  
a 3.050056293722636 1.5976e-08 au
q 1.231879136245706 9.2732e-08 au
i 27.82779877967971 6.9105e-06 deg
node 31.26137433860853 7.8568e-06 deg
peri 356.3771974573759 1.2704e-05 deg
M 187.9606067176029 3.0384e-06 deg
tp 2455264.291584182464
(2010-Mar-08.79158418)
2.2092e-05 TDB
period 1945.62979977642
5.33
1.5287e-05
4.185e-08
d
yr
n .1850300607244857 1.4538e-09 deg/d
Q 4.868233451199567 2.55e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2138  
   data-arc span      11135 days (30.49 yr)  
   first obs. used      1990-03-23  
   last obs. used      2020-09-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48479  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Sep-24 20:19:22  

Additional Information
 Earth MOID = .238093 au 
 Jupiter MOID = .582918 au 
 T_jup = 2.793 
[ 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 15.1   0.6 121 2 parameter fit from 665 observations, autocmod 2.8
comet total magnitude slope K1 4.5   n/a 121 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.]

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2004.9   162P/2004 TU12       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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