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398P/Boattini (2009 Q4)
Classification: Jupiter-family Comet          SPK-ID: 1003034
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2457277.5 (2015-Sep-12.0) TDB
Reference: JPL K203/1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5800840555922504 2.7687e-07  
a 3.136270669100871 2.1027e-06 au
q 1.316970059933817 2.0709e-07 au
i 10.98066781019765 7.6772e-06 deg
node 127.5968752769021 3.4902e-05 deg
peri 320.1312021672604 6.8074e-05 deg
M 16.11562916250459 0.00045023 deg
tp 2457186.683764405233
(2015-Jun-13.18376441)
0.0026229 TDB
period 2028.704215295747
5.55
0.0020402
5.586e-06
d
yr
n .1774531729592324 1.7846e-07 deg/d
Q 4.955571278267925 3.3225e-06 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.70102161505191E-9 1.095E-10
A2 [EST] 1.638960409673256E-9 4.84E-11
A3 [EST] 9.040023248129997E-10 4.499E-11
  Orbit Determination Parameters
   # obs. used (total)      1705  
   data-arc span      4150 days (11.36 yr)  
   first obs. used      2009-08-26  
   last obs. used      2021-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .80033  
   source      ORB  
   producer      Shantanu Naidu  
   solution date      2021-Jan-21 12:11:57  

Additional Information
 Earth MOID = .356098 au 
 Jupiter MOID = .600948 au 
 T_jup = 2.901 
[ 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 15.2   0.8 K203/1 2 parameter fit from 938 observations, autocmod 2.8
comet total magnitude slope K1 11.   n/a K203/1 autocmod 2.8

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2021.0   398P/2020 P2       
 2009.9   398P/2009 Q4       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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