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JPL Small-Body Database Browser
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389P/Siding Spring (2006 R1)
Classification: Jupiter-family Comet*          SPK-ID: 1002413
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 2455974.5 (2012-Feb-17.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .703634099695335 3.9723e-07  
a 5.623026016834395 1.6333e-07 au
q 1.66647316791568 2.2691e-06 au
i 160.0794420147773 4.3918e-05 deg
node 218.865500996646 0.0001186 deg
peri 249.5763742528784 0.00033919 deg
M 147.0596886338353 3.7588e-05 deg
tp 2453984.996499560112
(2006-Sep-06.49649956)
0.00052076 TDB
period 4870.275918655608
13.33
0.0002122
5.81e-07
d
yr
n .07391778330690031 3.2206e-09 deg/d
Q 9.57957886575311 2.7826e-07 au
  Orbit Determination Parameters
   # obs. used (total)      82  
   data-arc span      4807 days (13.16 yr)  
   first obs. used      2006-09-01  
   last obs. used      2019-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47161  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:49:38  

Additional Information
 Earth MOID = .771332 au 
 Jupiter MOID = .558116 au 
 T_jup = -0.464 
[ 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 14.4   0.4 11 2 parameter fit from 57 observations, autocmod 2.8
comet total magnitude slope K1 19.   n/a 11 autocmod 2.8
comet nuclear magnitude M2 19.3   0.6 11 from 6 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 11 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 11 autocmod 2.8

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2020.0   389P/2019 S1       
 2006.7   389P/2006 R1       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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