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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 2457375.5 (2015-Dec-19.0) TDB
Reference: JPL K104/12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .253123704975375 7.4465e-08  
a 3.895945433566345 5.1653e-07 au
q 2.909789291040138 5.9122e-07 au
i 9.156577914679417 6.7334e-06 deg
node 62.3871341376127 4.9058e-05 deg
peri 212.6248044763774 6.1997e-05 deg
M 274.8722127979199 5.5661e-05 deg
tp 2458039.681185426342
(2017-Oct-13.18118543)
0.00056005 JED
period 2808.780007236469
7.69
0.00055859
1.529e-06
d
yr
n .1281695252289269 2.5489e-08 deg/d
Q 4.882101576092552 6.4727e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 5.029782496669422E-9 1.709E-10
A2 [EST] 5.452244552706909E-9 2.778E-11
A3 [EST] -1.223368959478838E-8 2.01E-10
DT [EST] -315.3062518086212 3.678
  Orbit Determination Parameters
   # obs. used (total)      4025  
   data-arc span      9812 days (26.86 yr)  
   first obs. used      1989-01-05  
   last obs. used      2015-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .80379  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2015-Dec-09 11:41:10  

Additional Information
 Earth MOID = 1.89895 au 
 T_jup = 2.988 
[ 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. K104/12 2 parameter fit from 1199 observations, autocmod 2.6
comet total magnitude slope K1 12.   n/a K104/12 autocmod 2.6
comet nuclear magnitude M2 11.9 mag 0.9 K104/12 from 2210 observations, autocmod 2.6
comet nuclear magnitude slope K2 5.   n/a K104/12 autocmod 2.6
comet nuclear phase coefficient PC 0.03   n/a K104/12 autocmod 2.6
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
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 13:45 11:35 Jupiter 1.80837893965357 1.80791586374083 1.80884219039231 4.01377704794109 3.89533448118514 2418988.072714949 695.445440309117 2398.17028814474 66.8693075443538 -50.9814812735134 210737.405684566 T K104/12 CATAB v2.0c-linF95 2015-Dec-09 11:52:01 2015-Dec-09 11:52
1938-Jun-13 16:32 05:34 Jupiter 1.37568491592747 1.37553250650473 1.37583734971193 2.69492254968045 2.45584775463547 2429063.188649266 334.123033138507 544.581221940706 144.851490327302 57.7945992660908 54717.4229565215 T K104/12 CATAB v2.0c-linF95 2015-Dec-09 11:52:01 2015-Dec-09 11:52
1941-Aug-03 11:37 00:07 Jupiter 1.38388728893972 1.38345348847586 1.38432096055473 5.16297228389105 5.04303104659465 2430209.983769464 7.03029677442922 3199.64674772193 90.7391491587833 4.39934053319119 15401.304853054 T K104/12 CATAB v2.0c-linF95 2015-Dec-09 11:52:01 2015-Dec-09 11:52
1965-Jul-20 22:32 00:04 Jupiter 0.352487312585148 0.352469868585827 0.352504757761663 3.32999924272972 2.50657544642247 2438962.439140210 3.93627977220312 71.8010028064304 4.11994492373172 51.6545060665077 544944.475807326 T K104/12 CATAB v2.0c-linF95 2015-Dec-09 11:52:01 2015-Dec-09 11:52
2012-Dec-18 14:56 < 00:01 Jupiter 0.564406419238666 0.564404653386412 0.564408185088636 3.78791403196668 3.36850554842142 2456280.121934851 0.276540394682792 7.88460165215684 4.69684539780386 -38.5545160744721 876434.305108777 T K104/12 CATAB v2.0c-linF95 2015-Dec-09 11:52:01 2015-Dec-09 11:52
2034-Oct-18 11:56 01:15 Jupiter 1.48804972879042 1.4880275889751 1.48807186965704 1.87239510505967 1.53864562273311 2464253.997019625 75.0342708766979 65.4025226574574 7.56862928933979 -64.3555553926095 826616.997792884 T K104/12 CATAB v2.0c-linF95 2015-Dec-09 11:52:01 2015-Dec-09 11:52
2037-Apr-04 11:34 < 00:01 Jupiter 1.28021645933108 1.2801831526673 1.2802497651793 4.79543635714208 4.65542274638433 2465152.981814970 0.720468540695529 245.660025353506 8.40426744662456 -9.4368769412296 298405.498560706 T K104/12 CATAB v2.0c-linF95 2015-Dec-09 11:52:01 2015-Dec-09 11:52
2072-May-26 00:45 00:05 Jupiter 0.910439836260709 0.91035828885969 0.91052137813416 4.44102652778597 4.22634925349034 2477988.531137654 5.27647597917531 482.294913214213 20.5721081026637 -14.4037450969046 120956.732555561 T K104/12 CATAB v2.0c-linF95 2015-Dec-09 11:52:01 2015-Dec-09 11:52
2096-Feb-07 03:58 00:43 Jupiter 0.73060450987621 0.730213263796163 0.730995609064004 3.78189691831927 3.4617993537063 2486645.665066235 43.2618705426367 1956.08018079723 19.3816903596268 -18.7692402323675 111578.09664432 T K104/12 CATAB v2.0c-linF95 2015-Dec-09 11:52:01 2015-Dec-09 11:52
2099-Jul-20 11:14 03:22 Jupiter 1.0634068315497 1.06309900137295 1.06371452183301 1.92296389447936 1.45077718939236 2487904.967777538 202.041030218643 1181.02458266684 6.11810122681264 -5.57621811373972 70113.6304564126 T K104/12 CATAB v2.0c-linF95 2015-Dec-09 11:52:01 2015-Dec-09 11:52
2132-Feb-19 05:15 06:06 Jupiter 1.89951073273946 1.89124088984252 1.90774681217652 5.97788987284004 5.90282432642744 2499805.718956323 366.032627286148 80058.8302942923 31.9940688557834 -6.91253093739771 104716.800881958 T K104/12 CATAB v2.0c-linF95 2015-Dec-09 11:52:01 2015-Dec-09 11:52
2136-Aug-26 09:38 2_21:25 Jupiter 1.24043022414837 1.23796461491947 1.24290962959463 2.90599167847476 2.66065708439249 2501455.901586725 4164.67686835792 8029.39320526788 20.7186326226839 67.4481819098405 400448.45360234 T K104/12 CATAB v2.0c-linF95 2015-Dec-09 11:52:01 2015-Dec-09 11:52
2178-Aug-01 21:47 2_16:26 Jupiter 0.365542277171277 0.344800986110684 0.386104347926387 3.03494354454888 2.13928685354845 2516771.407435324 3865.62731842739 65243.8212147167 13.0188244982021 -33.1895307306953 111795.364479159 T K104/12 CATAB v2.0c-linF95 2015-Dec-09 11:52:01 2015-Dec-09 11:52

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1987.0       1989 XI   
 1979.3       1976 III   
 1971.6   65P/1970 U2   1969 II   1970p 
 1956.3   65P/1954 P1   1953 VIII   
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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