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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 2456586.5 (2013-Oct-21.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9994828602791953 1.9127e-05  
a 10179.28323702123 376.53 AU
q 5.264111691185054 1.8187e-05 AU
i 56.33918063983582 4.4932e-05 deg
node 26.98272464460857 4.3527e-05 deg
peri 70.04071894156741 0.0002919 deg
M 359.9997536937716 1.3668e-05 deg
tp 2456843.153456918836
(2014-Jul-04.65345692)
0.0026203 JED
period 375123459.4956458
1027032.06
2.0814e+07
5.699e+04
d
yr
n 9.596840477106411E-7 5.3248e-08 deg/d
Q 20353.30236235127 752.86 AU
  Orbit Determination Parameters
   # obs. used (total)      151  
   data-arc span      906 days (2.48 yr)  
   first obs. used      2012-10-17  
   last obs. used      2015-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   fit RMS      .49178  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-19 20:16:34  

Additional Information
 Earth MOID = 4.67565 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 44 2 parameter fit from 63 observations, autocmod 2.6
comet total magnitude slope K1 10.   n/a 44 autocmod 2.6
comet nuclear magnitude M2 11.5 mag 0.7 44 from 76 observations, autocmod 2.6
comet nuclear magnitude slope K2 5.   n/a 44 autocmod 2.6
comet nuclear phase coefficient PC 0.03   n/a 44 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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