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C/2021 G3 (PANSTARRS)
Classification: Hyperbolic Comet          SPK-ID: 1003788
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459311.5 (2021-Apr-07.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.001194274020973 0.00029169  
a -4338.284073530191 1059.2 au
q 5.181099964617769 0.00054247 au
i 102.8829990870701 0.0035474 deg
node 147.4185759431154 0.0011621 deg
peri 10.66653567985962 0.019661 deg
M -.0006717916247543609 0.00024568 deg
tp 2459506.263464375838
(2021-Oct-18.76346438)
0.15645 TDB
period n/a
n/a
n/a
n/a
d
yr
n 3.449269229766803E-6 1.2633e-06 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      44  
   data-arc span      93 days  
   first obs. used      2021-02-09  
   last obs. used      2021-05-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .35957  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jun-24 22:42:02  

Additional Information
 Earth MOID = 4.2074 au 
 Jupiter MOID = .161792 au 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 7.6   0.5 1 from 36 observations, assumed slope, autocmod 2.9c
comet total magnitude slope K1 15.   n/a 1 autocmod 2.9c
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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