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C/2021 A6 (PANSTARRS)
Classification: Comet          SPK-ID: 1003758
Ephemeris | Orbit Diagram | Orbital Elements | 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 2459251.5 (2021-Feb-06.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9993183821152729 0.00022997  
a 11632.51523402072 3925 au
q 7.928930427868885 0.00025466 au
i 75.60486682075219 0.0046029 deg
node 164.0799742197465 0.0009933 deg
peri 351.7579541950506 0.031797 deg
M 359.9999307281358 3.4736e-05 deg
tp 2459339.678609482640
(2021-May-05.17860948)
0.50624 TDB
period 458256751.1473703
1254638.61
2.3193e+08
6.35e+05
d
yr
n 7.855858077347299E-7 3.976e-07 deg/d
Q 23257.10153761357 7847.2 au
  Orbit Determination Parameters
   # obs. used (total)      91  
   data-arc span      142 days  
   first obs. used      2020-11-26  
   last obs. used      2021-04-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .42436  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-02 23:42:51  

Additional Information
 Earth MOID = 6.94601 au 
 Jupiter MOID = 2.54229 au 
 T_jup = 0.868 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 5.288640831438702E-8 4.174855514200845E-8 9.493611360025E-5 -2.176789247858956E-7 5.9733061473283E-6 1.016803741854267E-6
q 4.174855514200845E-8 6.48502924966166E-8 2.945731565172881E-5 -2.06663438808578E-7 1.864965212072401E-6 9.43517804271491E-7
tp 9.493611360025E-5 2.945731565172881E-5 .2562829691116021 -.0003640683065006578 .0160969186147308 .001735486040747495
node -2.176789247858956E-7 -2.06663438808578E-7 -.0003640683065006578 9.866364160282574E-7 -2.29134498974575E-5 -4.567316630214381E-6
peri 5.9733061473283E-6 1.864965212072401E-6 .0160969186147308 -2.29134498974575E-5 .001011044045093821 .0001092106837887917
i 1.016803741854267E-6 9.43517804271491E-7 .001735486040747495 -4.567316630214381E-6 .0001092106837887917 2.118661328365967E-5

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 7.0   0.6 5 from 84 observations, assumed slope, autocmod 2.9c
comet total magnitude slope K1 10.   n/a 5 autocmod 2.9c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2021.3   C/2021 A6       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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