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C/2021 O3 (PANSTARRS)
Classification: Hyperbolic Comet          SPK-ID: 1003796
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459447.5 (2021-Aug-21.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000201466228578 5.8977e-05  
a -1425.578603320638 417.62 au
q .287205944752622 7.0677e-05 au
i 56.75635709103372 0.012207 deg
node 189.0372950708619 0.0073928 deg
peri 299.9797135434813 0.0039588 deg
M -.004449920548678035 0.001955 deg
tp 2459690.516037708279
(2022-Apr-21.01603771)
0.022097 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.831122172282227E-5 8.0464e-06 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      279  
   data-arc span      53 days  
   first obs. used      2021-07-26  
   last obs. used      2021-09-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .45075  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Sep-20 08:45:04  

Additional Information
 Earth MOID = .0629247 au 
 Jupiter MOID = 2.16459 au 
 T_jup = 0.446 
[ 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 6.4   0.5 6 2 parameter fit from 253 observations, autocmod 2.9e
comet total magnitude slope K1 16.75   n/a 6 autocmod 2.9e
comet nuclear magnitude M2 13.2   0.2 6 from 10 observations, autocmod 2.9e
comet nuclear magnitude slope K2 5.   n/a 6 autocmod 2.9e
comet nuclear phase coefficient PC 0.03   n/a 6 autocmod 2.9e
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
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