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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 2456633.5 (2013-Dec-07.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9995456531667634 1.753e-05  
a 11585.79335048471 447.06 AU
q 5.263968519326858 1.6112e-05 AU
i 56.33897517894267 3.687e-05 deg
node 26.98251171770773 4.0575e-05 deg
peri 70.0467218850366 0.00025209 deg
M 359.9998342674224 9.594e-06 deg
tp 2456843.197125820266
(2014-Jul-04.69712582)
0.002331 JED
period 455498649.632601
1247087.34
2.6364e+07
7.218e+04
d
yr
n 7.903426284367058E-7 4.5745e-08 deg/d
Q 23166.32273245009 893.91 AU
  Orbit Determination Parameters
   # obs. used (total)      164  
   data-arc span      971 days (2.66 yr)  
   first obs. used      2012-10-17  
   last obs. used      2015-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   fit RMS      .49262  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-30 10:43:30  

Additional Information
 Earth MOID = 4.67547 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 48 2 parameter fit from 70 observations, autocmod 2.6
comet total magnitude slope K1 10.   n/a 48 autocmod 2.6
comet nuclear magnitude M2 11.5 mag 0.7 48 from 81 observations, autocmod 2.6
comet nuclear magnitude slope K2 5.   n/a 48 autocmod 2.6
comet nuclear phase coefficient PC 0.03   n/a 48 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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