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C/2015 A2 (PANSTARRS)
Classification: Hyperbolic Comet          SPK-ID: 1003368
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457032.5 (2015-Jan-10.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.013746660304869 0.011868  
a -383.1319407833709 328.92 au
q 5.2667846418942 0.02579 au
i 108.8991049717724 0.21108 deg
node 258.4742742165169 0.012513 deg
peri 212.3704073720948 0.77151 deg
M -.03055514641029533 0.03852 deg
tp 2457264.989227538409
(2015-Aug-30.48922754)
6.4183 TDB
period n/a
n/a
n/a
n/a
d
yr
n .0001314260739467913 0.00016925 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      23  
   data-arc span      50 days  
   first obs. used      2014-12-02  
   last obs. used      2015-01-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .55947  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:33:05  

Additional Information
 Earth MOID = 4.40165 au 
 Jupiter MOID = .589464 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 14.3   0.5 5 2 parameter fit from 18 observations, autocmod 2.9c
comet total magnitude slope K1 4.5   n/a 5 autocmod 2.9c
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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