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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 2456514.5 (2013-Aug-10.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .999377759230874 2.0531e-05  
a 8460.266385651759 279.17 AU
q 5.264322662818636 2.1157e-05 AU
i 56.34021530314219 6.0299e-05 deg
node 26.98368777790743 5.3122e-05 deg
peri 70.03298509608935 0.00039774 deg
M 359.9995837999517 2.0603e-05 deg
tp 2456843.104955866342
(2014-Jul-04.60495587)
0.0031788 JED
period 284232989.8807074
778187.52
1.4069e+07
3.852e+04
d
yr
n 1.266566559184745E-6 6.2692e-08 deg/d
Q 16915.2684486407 558.17 AU
  Orbit Determination Parameters
   # obs. used (total)      133  
   data-arc span      677 days (1.85 yr)  
   first obs. used      2012-10-17  
   last obs. used      2014-08-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   fit RMS      .49975  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:32:51  

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 7.4 mag 0.6 40 2 parameter fit from 59 observations, autocmod 2.6
comet total magnitude slope K1 11.   n/a 40 autocmod 2.6
comet nuclear magnitude M2 11.4 mag 0.8 40 from 62 observations, autocmod 2.6
comet nuclear magnitude slope K2 5.   n/a 40 autocmod 2.6
comet nuclear phase coefficient PC 0.03   n/a 40 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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