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C/2021 B2 (PANSTARRS)
Classification: Comet          SPK-ID: 1003761
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

[ hide orbit diagram ]

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.


Orbital Elements at Epoch 2459252.5 (2021-Feb-07.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9924542217998219 0.00017836  
a 333.0437361033692 7.8798 au
q 2.513074163594671 7.515e-05 au
i 38.09413949682613 0.00058272 deg
node 120.5557246304746 0.0015532 deg
peri 334.9742525080366 0.0021391 deg
M 359.986008587853 0.00049716 deg
tp 2459338.779849866492
(2021-May-04.27984987)
0.0066202 TDB
period 2219986.490677372
6077.99
78787
215.7
d
yr
n .0001621631489704044 5.7552e-06 deg/d
Q 663.5743980431438 15.7 au
  Orbit Determination Parameters
   # obs. used (total)      75  
   data-arc span      88 days  
   first obs. used      2020-12-24  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .47057  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:34:17  

Additional Information
 Earth MOID = 1.56835 au 
 Jupiter MOID = 2.50148 au 
 T_jup = 1.560 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 3.181089204294521E-8 1.052319876256988E-8 -6.606332909820895E-7 -2.456343518291879E-7 -8.133701029097628E-8 9.162335274617785E-8
q 1.052319876256988E-8 5.647568840424674E-9 -4.659925516328979E-7 -1.103564157311032E-7 -1.211067807084212E-7 4.091503637244992E-8
tp -6.606332909820895E-7 -4.659925516328979E-7 4.38267083083962E-5 8.297149228850177E-6 1.305520323286519E-5 -3.066773636950244E-6
node -2.456343518291879E-7 -1.103564157311032E-7 8.297149228850177E-6 2.41234438973328E-6 1.760377180769883E-6 -9.027750286732143E-7
peri -8.133701029097628E-8 -1.211067807084212E-7 1.305520323286519E-5 1.760377180769883E-6 4.57580714503643E-6 -6.409422909190161E-7
i 9.162335274617785E-8 4.091503637244992E-8 -3.066773636950244E-6 -9.027750286732143E-7 -6.409422909190161E-7 3.39565947945875E-7

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 4.3   0.3 4 2 parameter fit from 74 observations, autocmod 2.9c
comet total magnitude slope K1 31.   n/a 4 autocmod 2.9c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2021.3   C/2021 B2       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
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