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278P/McNaught
Classification: Jupiter-family Comet          SPK-ID: 1002397
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457121.5 (2015-Apr-09.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4333755456896361 9.0901e-07  
a 3.699828895911181 8.1749e-08 au
q 2.096413529187389 3.3993e-06 au
i 6.683529290661802 2.053e-05 deg
node 15.49228478034401 0.00010243 deg
peri 237.9290867000538 0.0003183 deg
M 85.11736808848123 9.2567e-05 deg
tp 2456506.908467688391
(2013-Aug-02.40846769)
0.00067298 TDB
period 2599.386665741148
7.12
8.6151e-05
2.359e-07
d
yr
n .1384942089396136 4.5901e-09 deg/d
Q 5.303244262634973 1.1718e-07 au
  Orbit Determination Parameters
   # obs. used (total)      504  
   data-arc span      5231 days (14.32 yr)  
   first obs. used      2006-05-22  
   last obs. used      2020-09-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62638  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:28:12  

Additional Information
 Earth MOID = 1.09147 au 
 Jupiter MOID = .396341 au 
 T_jup = 2.916 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 8.262936772697691E-13 -3.089839753312552E-12 4.72679650915311E-10 -5.746291764972006E-12 2.377517443310321E-10 -8.892793159718399E-12
q -3.089839753312552E-12 1.155498820025441E-11 -1.756318969754874E-9 2.128131013409355E-11 -8.850798098170593E-10 3.325633482663098E-11
tp 4.72679650915311E-10 -1.756318969754874E-9 4.52902099962454E-7 -6.199542083991194E-9 2.001972754616644E-7 -4.890884309050922E-9
node -5.746291764972006E-12 2.128131013409355E-11 -6.199542083991194E-9 1.049214832839707E-8 -1.301637320483686E-8 1.332825737946525E-9
peri 2.377517443310321E-10 -8.850798098170593E-10 2.001972754616644E-7 -1.301637320483686E-8 1.013133992606573E-7 -3.759479018535993E-9
i -8.892793159718399E-12 3.325633482663098E-11 -4.890884309050922E-9 1.332825737946525E-9 -3.759479018535993E-9 4.214675328583283E-10

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 13.8   0.8 46 2 parameter fit from 430 observations, autocmod 2.9c
comet total magnitude slope K1 10.25   n/a 46 autocmod 2.9c
comet nuclear magnitude M2 17.2   0.9 46 from 48 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 46 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 46 autocmod 2.9c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2013.6   278P/2013 B1       
 2006.5   278P/2006 K2       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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