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P/2012 O2 (McNaught)
Classification: Jupiter-family Comet          SPK-ID: 1003200
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456139.5 (2012-Jul-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5382710102096243 1.7238e-05  
a 3.596989187297545 0.00015146 au
q 1.6608341837378 9.2178e-06 au
i 24.52745486680309 0.00030657 deg
node 120.8135816327748 0.00025099 deg
peri 183.0473914904109 0.00060768 deg
M 5.186765158058672 0.00028619 deg
tp 2456103.599441127633
(2012-Jun-25.09944113)
0.00097688 TDB
period 2491.765252562438
6.82
0.15738
0.0004309
d
yr
n .1444758889826357 9.1254e-06 deg/d
Q 5.53314419085729 0.00023299 au
  Orbit Determination Parameters
   # obs. used (total)      81  
   data-arc span      124 days  
   first obs. used      2012-05-20  
   last obs. used      2012-09-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      4  
   norm. resid. RMS      .3883  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:32:20  

Additional Information
 Earth MOID = .645459 au 
 Jupiter MOID = .259083 au 
 T_jup = 2.722 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 17.3   0.6 9 from 50 observations, assumed slope, autocmod 2.9c
comet total magnitude slope K1 10.   n/a 9 autocmod 2.9c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2012.5   P/2012 O2       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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