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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 2456643.5 (2013-Dec-17.0) TDB
Reference: JPL 50 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9995554619708491 1.654e-05  
a 11841.37660883266 440.62 AU
q 5.263942220124018 1.4814e-05 AU
i 56.33898411549335 3.5478e-05 deg
node 26.98252410352984 4.0183e-05 deg
peri 70.04801049271983 0.00022991 deg
M 359.999847245251 8.5272e-06 deg
tp 2456843.207298927233
(2014-Jul-04.70729893)
0.002152 JED
period 470653960.56424
1288580.32
2.627e+07
7.192e+04
d
yr
n 7.648931702782584E-7 4.2693e-08 deg/d
Q 23677.4892754452 881.04 AU
  Orbit Determination Parameters
   # obs. used (total)      167  
   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      .49208  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-19 09:42:36  

Additional Information
 Earth MOID = 4.67552 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 50 2 parameter fit from 73 observations, autocmod 2.6
comet total magnitude slope K1 10.   n/a 50 autocmod 2.6
comet nuclear magnitude M2 11.5 mag 0.7 50 from 81 observations, autocmod 2.6
comet nuclear magnitude slope K2 5.   n/a 50 autocmod 2.6
comet nuclear phase coefficient PC 0.03   n/a 50 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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