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C/2015 T2 (PANSTARRS)
Classification: Hyperbolic Comet          SPK-ID: 1003409
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457742.5 (2016-Dec-20.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000389042702436 1.928e-05  
a -17826.53716484681 883.38 au
q 6.93528419368787 1.7978e-05 au
i 124.543195419278 4.4827e-05 deg
node 51.05822935409078 2.6652e-05 deg
peri 30.7733082885158 0.00016067 deg
M -6.278045591261974E-5 4.6665e-06 deg
tp 2457894.107565772427
(2017-May-20.60756577)
0.0023264 TDB
period n/a
n/a
n/a
n/a
d
yr
n 4.14098436267075E-7 3.078e-08 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      214  
   data-arc span      1448 days (3.96 yr)  
   first obs. used      2015-10-09  
   last obs. used      2019-09-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .48996  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:33:15  

Additional Information
 Earth MOID = 6.03186 au 
 Jupiter MOID = 2.35948 au 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 3.717039209467204E-10 3.396967229115537E-10 -9.94449023121981E-10 5.037952383302367E-12 6.073638219508634E-11 -3.443989296667728E-10
q 3.396967229115537E-10 3.2321740002638E-10 -2.425667482590061E-9 5.291464064509349E-12 -7.357044053469465E-11 -3.247848793018388E-10
tp -9.94449023121981E-10 -2.425667482590061E-9 5.412109407903425E-6 6.321692308790983E-10 3.691919019963908E-7 8.260008018591539E-9
node 5.037952383302367E-12 5.291464064509349E-12 6.321692308790983E-10 7.103105861496002E-10 4.448325959809648E-10 4.624209106349985E-10
peri 6.073638219508634E-11 -7.357044053469465E-11 3.691919019963908E-7 4.448325959809648E-10 2.58140519032749E-8 7.252302840075899E-10
i -3.443989296667728E-10 -3.247848793018388E-10 8.260008018591539E-9 4.624209106349985E-10 7.252302840075899E-10 2.009499636607195E-9

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 7.0   0.7 25 from 197 observations, assumed slope, autocmod 2.9c
comet total magnitude slope K1 10.25   n/a 25 autocmod 2.9c
comet nuclear magnitude M2 11.4   01.E-5 25 from 3 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 25 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 25 autocmod 2.9c
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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