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C/2015 J1 (PANSTARRS)
Classification: Hyperbolic Comet          SPK-ID: 1003388
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457242.5 (2015-Aug-08.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.003182717754017 9.1674e-05  
a -1891.328665425382 54.47 au
q 6.019565322130465 0.00019752 au
i 94.99829941694833 0.0002162 deg
node 219.992186670806 5.4308e-05 deg
peri 315.46788231 0.0036989 deg
M .004841383973243806 0.00020909 deg
tp 2456838.467815530398
(2014-Jun-29.96781553)
0.02975 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.198266910246121E-5 5.1765e-07 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      54  
   data-arc span      390 days (1.07 yr)  
   first obs. used      2015-05-14  
   last obs. used      2016-06-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .40584  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:33:10  

Additional Information
 Earth MOID = 5.26273 au 
 Jupiter MOID = 1.51066 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 7.5   0.4 12 2 parameter fit from 45 observations, autocmod 2.9c
comet total magnitude slope K1 11.25   n/a 12 autocmod 2.9c
comet nuclear magnitude M2 12.3   0.4 12 from 3 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 12 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 12 autocmod 2.9c
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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