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C/2012 U1 (PANSTARRS)
Classification: Comet          SPK-ID: 1003216
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456660.5 (2014-Jan-03.0) TDB
Reference: JPL 51 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9995681498510026 1.6038e-05  
a 12189.17950948894 452.72 AU
q 5.263898987328626 1.416e-05 AU
i 56.33902388223699 3.373e-05 deg
node 26.9825795162208 3.9658e-05 deg
peri 70.05024157920838 0.00021804 deg
M 359.9998661737317 7.4568e-06 deg
tp 2456843.225434512093
(2014-Jul-04.72543451)
0.0020639 JED
period 491541438.670153
1345767.11
2.7385e+07
7.498e+04
d
yr
n 7.323899302853622E-7 4.0803e-08 deg/d
Q 24373.09511999055 905.24 AU
  Orbit Determination Parameters
   # obs. used (total)      172  
   data-arc span      996 days (2.73 yr)  
   first obs. used      2012-10-17  
   last obs. used      2015-07-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   fit RMS      .49489  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Aug-27 15:14:03  

Additional Information
 Earth MOID = 4.67532 AU 
 T_jup = 1.577 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 8.3 mag 0.6 51 2 parameter fit from 73 observations, autocmod 2.6
comet total magnitude slope K1 10.   n/a 51 autocmod 2.6
comet nuclear magnitude M2 11.5 mag 0.7 51 from 86 observations, autocmod 2.6
comet nuclear magnitude slope K2 5.   n/a 51 autocmod 2.6
comet nuclear phase coefficient PC 0.03   n/a 51 autocmod 2.6

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2014.5   C/2012 U1       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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