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417P/NEOWISE (2021 B1)
Classification: Jupiter-family Comet          SPK-ID: 1003390
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458414.5 (2018-Oct-23.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5545777500296636 3.3078e-07  
a 3.350526484438875 1.3995e-07 au
q 1.492399045283965 1.1048e-06 au
i 8.128552704741477 2.5559e-05 deg
node 111.3600559834504 6.9497e-05 deg
peri 129.3885320826374 0.00015654 deg
M 213.4563661301544 4.2583e-05 deg
tp 2459326.369029129003
(2021-Apr-21.86902913)
0.00021464 TDB
period 2240.103113438558
6.13
0.00014035
3.843e-07
d
yr
n .1607068879286544 1.0069e-08 deg/d
Q 5.208653923593785 2.1757e-07 au
  Orbit Determination Parameters
   # obs. used (total)      252  
   data-arc span      2254 days (6.17 yr)  
   first obs. used      2015-05-15  
   last obs. used      2021-07-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47491  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-26 23:12:41  

Additional Information
 Earth MOID = .498349 au 
 Jupiter MOID = .376777 au 
 T_jup = 2.875 
[ 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 17.5   0.6 18 2 parameter fit from 210 observations, autocmod 2.9c
comet total magnitude slope K1 6.5   n/a 18 autocmod 2.9c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2021.3   417P/2021 B1       
 2015.2   417P/2015 J3       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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