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213P/Van Ness
Classification: Jupiter-family Comet          SPK-ID: 1001663
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2457990.5 (2017-Aug-25.0) TDB
Reference: JPL K171/3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4074580950997326 7.7381e-06  
a 3.347182741588493 5.1844e-05 au
q 1.983346037750145 5.9695e-06 au
i 10.37780533630779 5.0745e-05 deg
node 311.3167687277543 9.1144e-05 deg
peri 5.554605392988465 0.00075313 deg
M 355.1122218035254 0.00026031 deg
tp 2458020.868724464332
(2017-Sep-24.36872446)
0.001782 TDB
period 2236.750598675892
6.12
0.051967
0.0001423
d
yr
n .1609477606547248 3.7393e-06 deg/d
Q 4.711019445426841 7.2968e-05 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -2.602317031597013E-9 7.629E-9
A2 [EST] -7.229276065110103E-10 4.495E-9
A3 [EST] 1.924544451509525E-8 9.602E-10
  Orbit Determination Parameters
   # obs. used (total)      353  
   data-arc span      597 days (1.63 yr)  
   first obs. used      2017-04-22  
   last obs. used      2018-12-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      4  
   norm. resid. RMS      .59056  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2019-May-15 16:31:59  

Additional Information
 Earth MOID = .969552 au 
 Jupiter MOID = .61803 au 
 T_jup = 2.995 
[ 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 11.3   0.9 K171/3 2 parameter fit from 144 observations, autocmod 2.6q
comet total magnitude slope K1 14.   n/a K171/3 autocmod 2.6q
comet nuclear magnitude M2 14.7   0.9 K171/3 from 185 observations, autocmod 2.6q
comet nuclear magnitude slope K2 5.   n/a K171/3 autocmod 2.6q
comet nuclear phase coefficient PC 0.03   n/a K171/3 autocmod 2.6q

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2011.6   213P/2009 B3       
 2005.5   213P/2005 R2       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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