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

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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 2459255.5 (2021-Feb-10.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9925208425112372 0.00015875  
a 336.0145580247663 7.1394 au
q 2.513105797984261 6.5914e-05 au
i 38.09442686735279 0.00049881 deg
node 120.5549553235785 0.0013292 deg
peri 334.9737912872174 0.0018646 deg
M 359.9866741602086 0.00042526 deg
tp 2459338.777495294161
(2021-May-04.27749529)
0.0058889 TDB
period 2249756.771450195
6159.50
71702
196.3
d
yr
n .0001600172981223849 5.0999e-06 deg/d
Q 669.5160102515483 14.225 au
  Orbit Determination Parameters
   # obs. used (total)      80  
   data-arc span      103 days  
   first obs. used      2020-12-24  
   last obs. used      2021-04-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .46767  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-01 22:12:56  

Additional Information
 Earth MOID = 1.56821 au 
 Jupiter MOID = 2.50142 au 
 T_jup = 1.560 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 4.8   0.3 5 2 parameter fit from 77 observations, autocmod 2.9c
comet total magnitude slope K1 30.   n/a 5 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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