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65P/Gunn
Classification: Jupiter-family Comet          SPK-ID: 1000035
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2456717.5 (2014-Mar-01.0) TDB
Reference: JPL K104/8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2713743832495498 5.8718e-08  
a 3.850371920300502 4.3103e-07 AU
q 2.805479615147568 4.1506e-07 AU
i 9.493128348552339 6.9452e-06 deg
node 65.93200150913462 4.6989e-05 deg
peri 209.6887334191053 5.6893e-05 deg
M 190.5086200125656 4.4592e-05 deg
tp 2458016.764475235354
(2017-Sep-20.26447524)
0.0005473 JED
period 2759.640113375701
7.56
0.00046339
1.269e-06
d
yr
n .1304517927011989 2.1905e-08 deg/d
Q 4.895264225453436 5.48e-07 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 4.950474964719565E-9 1.787E-10
A2 [EST] 5.454013192701299E-9 2.83E-11
A3 [EST] -1.185319657744641E-8 2.078E-10
DT [EST] -317.265733863931 3.817
  Orbit Determination Parameters
   # obs. used (total)      3786  
   data-arc span      9161 days (25.08 yr)  
   first obs. used      1989-01-05  
   last obs. used      2014-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .82871  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2014-Feb-19 12:07:25  

Additional Information
 Earth MOID = 1.79268 AU 
 T_jup = 2.985 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 7.9 mag 1. K104/8 2 parameter fit from 1102 observations, autocmod 2.5c
comet total magnitude slope K1 12.   n/a K104/8 autocmod 2.5c
comet nuclear magnitude M2 11.9 mag 0.9 K104/8 from 2067 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a K104/8 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a K104/8 autocmod 2.5c
diameter diameter 10.8 km n/a Scotti,J (1994) BAAS 26:1375  

65P/Gunn          Discovered 1970-Oct-27 by Gunn, James E. at Palomar Mountain Observatory, California (675)
discovered on plate/photo taken on discovery date
Reference: comet.disLast Updated: 2003-08-29

[ 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
1910-Nov-12 09:05 12:22 Jupiter 1.80831131124768 1.80781520777492 1.80880761312162 4.01316008380867 3.89469425678914 2418987.878504745 741.556165991512 2559.96041228484 69.0127488346928 -50.8184823377122 203676.415318166 T K104/8 CATAB v2.0c-linF95 2014-Feb-19 12:12:04 2014-Feb-19 12:12
1938-Jun-13 18:21 05:46 Jupiter 1.37559699966833 1.37544373292894 1.37575029078031 2.69446074765044 2.45532496100401 2429063.264400757 346.118649230909 556.299188858679 160.27332041989 59.1434468600191 50205.0895439833 T K104/8 CATAB v2.0c-linF95 2014-Feb-19 12:12:04 2014-Feb-19 12:12
1941-Aug-03 11:52 00:08 Jupiter 1.38364449650706 1.38318659341266 1.38410225651783 5.16236854472814 5.04239164722476 2430209.994467066 7.60074942865621 3370.99729376812 97.627195647243 4.58064698580722 14889.4728117159 T K104/8 CATAB v2.0c-linF95 2014-Feb-19 12:12:04 2014-Feb-19 12:12
1965-Jul-20 22:27 00:04 Jupiter 0.352485483630401 0.352466330808137 0.352504637886183 3.33000361338123 2.50657627855569 2438962.435677684 4.21091102011254 79.6191090078607 4.22054289472659 51.6759327852465 532029.658165863 T K104/8 CATAB v2.0c-linF95 2014-Feb-19 12:12:04 2014-Feb-19 12:12
2012-Dec-18 14:56 < 00:01 Jupiter 0.564406253494548 0.564404448774261 0.564408058212046 3.78791257254976 3.36850377646274 2456280.122276973 0.289347341453013 8.15200520916989 4.84456286304275 -36.5208827174433 833201.510260599 T K104/8 CATAB v2.0c-linF95 2014-Feb-19 12:12:04 2014-Feb-19 12:12
2034-Oct-18 12:09 01:21 Jupiter 1.48804180805352 1.48801835735905 1.48806525997667 1.87235893316967 1.53859963529478 2464254.006447043 81.0189030885317 70.2745672528767 7.70004995443655 -64.6901762011195 814611.751747331 T K104/8 CATAB v2.0c-linF95 2014-Feb-19 12:12:04 2014-Feb-19 12:12
2037-Apr-04 11:34 < 00:01 Jupiter 1.28020524542165 1.28016900161535 1.2802414882635 4.79540436745072 4.65538854968832 2465152.982109627 0.779301704470184 266.791873312871 8.92053190926415 -9.46486618323416 281674.528997134 T K104/8 CATAB v2.0c-linF95 2014-Feb-19 12:12:04 2014-Feb-19 12:12
2072-May-26 00:43 00:06 Jupiter 0.910413952466008 0.910325728143655 0.91050217031655 4.44096056259968 4.22627367898535 2477988.530080743 5.76502021662769 521.710378373671 20.5508213193651 -14.3878675297028 120692.763385783 T K104/8 CATAB v2.0c-linF95 2014-Feb-19 12:12:04 2014-Feb-19 12:12
2096-Feb-07 04:18 00:47 Jupiter 0.730734699361288 0.730310722170174 0.73115850407774 3.78217580356221 3.46216368431517 2486645.679261369 46.8071300582543 2120.08752329982 19.3707858991101 -18.7683299492559 111656.959962721 T K104/8 CATAB v2.0c-linF95 2014-Feb-19 12:12:04 2014-Feb-19 12:12
2099-Jul-20 10:16 03:39 Jupiter 1.06350787370795 1.06317403776608 1.06384154485215 1.92296678697847 1.45083318453541 2487904.927949067 219.019722748197 1279.57101012208 6.79286698732443 -5.54543753955439 62757.9852629836 T K104/8 CATAB v2.0c-linF95 2014-Feb-19 12:12:04 2014-Feb-19 12:12
2132-Feb-18 18:06 06:37 Jupiter 1.89678796888208 1.88782898130561 1.90570728573783 5.97178468713369 5.89653286741154 2499805.254259705 397.475526871924 86606.8854467996 31.9804510318458 -6.92110139879731 104631.608372462 T K104/8 CATAB v2.0c-linF95 2014-Feb-19 12:12:04 2014-Feb-19 12:12
2136-Aug-25 14:37 3_03:03 Jupiter 1.23961180612198 1.23693719547167 1.24230255346296 2.9041271091766 2.65845088220409 2501455.108882010 4503.15352296594 8690.28153806891 23.1949392995896 67.2664224290782 356751.066199963 T K104/8 CATAB v2.0c-linF95 2014-Feb-19 12:12:04 2014-Feb-19 12:12
2178-Aug-03 09:00 2_22:10 Jupiter 0.372407884413716 0.349608372255473 0.394952039297607 3.03524515733195 2.15958708338162 2516772.874813249 4209.7827133364 71731.0091779965 13.1222679800624 -32.4964821728994 110908.915734371 T K104/8 CATAB v2.0c-linF95 2014-Feb-19 12:12:04 2014-Feb-19 12:12

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1987.5       1989 XI   
 1979.9       1982 X   
 1972.4   65P/1970 U2   1969 II   1970p 
 1957.3   65P/1954 P1       
 1949.7       1953 VIII   
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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