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P/2015 M2 (PANSTARRS)
Classification: Chiron-type Comet          SPK-ID: 1003400
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2457418.5 (2016-Jan-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .179076547906711 1.9713e-05  
a 7.202599267060346 0.00021877 au
q 5.912782654359772 4.115e-05 au
i 3.973864755919864 3.7036e-05 deg
node 86.6113392743942 0.00063044 deg
peri 224.7869319297724 0.0029464 deg
M 7.794352011285356 0.0022454 deg
tp 2457265.634380557083
(2015-Aug-31.13438056)
0.038491 TDB
period 7060.448760816864
19.33
0.32168
0.0008807
d
yr
n .05098826040603537 2.3231e-06 deg/d
Q 8.492415879760918 0.00025795 au
  Orbit Determination Parameters
   # obs. used (total)      152  
   data-arc span      873 days (2.39 yr)  
   first obs. used      2015-06-22  
   last obs. used      2017-11-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      4  
   norm. resid. RMS      .46995  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:33:13  

Additional Information
 Earth MOID = 4.89984 au 
 Jupiter MOID = .811438 au 
 T_jup = 3.032 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 7.0   0.6 12 from 129 observations, assumed slope, autocmod 2.9c
comet total magnitude slope K1 11.75   n/a 12 autocmod 2.9c
comet nuclear magnitude M2 11.9   0.3 12 from 12 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

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2015.7   P/2015 M2       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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