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366P/Spacewatch
Classification: Encke-type Comet          SPK-ID: 1002439
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455320.5 (2010-May-04.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3473441669301122 1.517e-05  
a 3.501073125891587 5.3607e-07 au
q 2.28499579761737 5.3358e-05 au
i 8.853805178127358 0.00010949 deg
node 70.79714491950133 0.00054186 deg
peri 153.5760441370972 0.0052526 deg
M 268.0074617731242 0.0020264 deg
tp 2455931.935007939145
(2012-Jan-05.43500794)
0.013461 TDB
period 2392.76583841215
6.55
0.00054956
1.505e-06
d
yr
n .1504535020605684 3.4556e-08 deg/d
Q 4.717150454165805 7.2228e-07 au
  Orbit Determination Parameters
   # obs. used (total)      76  
   data-arc span      4764 days (13.04 yr)  
   first obs. used      2005-04-04  
   last obs. used      2018-04-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .75881  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:52:19  

Additional Information
 Earth MOID = 1.27982 au 
 Jupiter MOID = .34093 au 
 T_jup = 3.006 
[ 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 13.2   0.6 20 2 parameter fit from 31 observations, autocmod 2.8
comet total magnitude slope K1 17.   n/a 20 autocmod 2.8
comet nuclear magnitude M2 17.6   0.7 20 from 37 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 20 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 20 autocmod 2.8

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2018.6   366P/2018 F2       
 2005.5   366P/2005 JN       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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