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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 
[ 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 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1929-Jan-23 23:15 00:17 Jupiter 0.257203196483134 0.257194293255996 0.257212100146718 5.30019492821664 4.63741942603062 2425635.468634806 16.7372016156297 2077.71258508345 407.708649614165 84.4327342830496 85257.9709391241 T 46 CATAB v2.0g-lin.ifort 2021-Apr-15 23:28:14 2021-Apr-15 23:28
1964-Aug-26 16:28 00:20 Jupiter 1.20284146230078 1.20277960717361 1.20290331738583 7.92648507997 7.83714210632488 2438634.186073995 20.4512459194528 3063.64119380482 289.230791754418 5.30283731134181 55051.5171333762 T 46 CATAB v2.0g-lin.ifort 2021-Apr-15 23:28:14 2021-Apr-15 23:28
1989-Dec-23 10:44 00:15 Jupiter 0.818122249461324 0.818097998732446 0.818146501194196 6.14124738034717 5.97028216743284 2447883.946923144 15.2863792874458 1916.97766800056 270.53858992954 -53.5620387673211 334778.401477508 T 46 CATAB v2.0g-lin.ifort 2021-Apr-15 23:28:14 2021-Apr-15 23:28
2025-Jul-03 02:43 00:13 Jupiter 1.06424020208139 1.06420264278021 1.06427776224789 7.08048077243713 6.96716726825457 2460859.612865712 13.3869533364744 2424.42284934392 247.928145498715 -41.1771325867581 326937.088176581 T 46 CATAB v2.0g-lin.ifort 2021-Apr-15 23:28:14 2021-Apr-15 23:28
2071-Nov-02 03:31 01:09 Jupiter 0.521424911408488 0.521388447132549 0.521461379110376 4.19234275751105 3.78508408421023 2477782.646235842 69.0392112234818 2892.6690353444 181.822594654273 46.7844918429682 588948.759392383 T 46 CATAB v2.0g-lin.ifort 2021-Apr-15 23:28:14 2021-Apr-15 23:28
2108-Apr-24 06:38 01:49 Jupiter 1.57913437670143 1.57835714687545 1.57991160593085 9.15377449484693 9.094988695918 2491104.776172699 108.806940427659 38726.0717124677 257.006671367335 -6.34041247220115 66706.6454725842 T 46 CATAB v2.0g-lin.ifort 2021-Apr-15 23:28:14 2021-Apr-15 23:28
2119-Jan-01 01:43 01:36 Jupiter 1.41231018805548 1.41185422916488 1.41276616033078 8.2856064142865 8.21290378343303 2495008.571422321 96.1283474608491 23756.3356581286 111.441369026866 -18.6383369194974 457556.482393895 T 46 CATAB v2.0g-lin.ifort 2021-Apr-15 23:28:14 2021-Apr-15 23:28
2155-Apr-23 00:48 16:57 Jupiter 0.514977464259937 0.514701949946 0.515252995629805 4.10403488921486 3.68151471749199 2508269.533322735 1016.84396646083 14689.0539193244 252.304642581834 9.11530748849245 73241.544351218 T 46 CATAB v2.0g-lin.ifort 2021-Apr-15 23:28:14 2021-Apr-15 23:28
2191-Apr-22 08:31 08:49 Jupiter 0.306763557577179 0.306083684845037 0.307459840135711 5.2708964283339 4.71805405552606 2521417.854897948 529.420950636702 123439.041282855 148.755002204866 -76.5370104663567 372575.041759397 T 46 CATAB v2.0g-lin.ifort 2021-Apr-15 23:28:14 2021-Apr-15 23:28

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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