Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2457164.5 (2015-May-22.0) TDB
Reference: JPL K104/11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2562021795323923 7.1448e-08  
a 3.893644631562843 4.8547e-07 AU
q 2.896084390631844 5.5e-07 AU
i 9.165594564476168 6.7599e-06 deg
node 63.22531219935958 4.8582e-05 deg
peri 211.8361703800174 6.1229e-05 deg
M 248.1215286365437 5.1619e-05 deg
tp 2458036.621347374376
(2017-Oct-10.12134737)
0.0005576 JED
period 2806.292231458998
7.68
0.00052485
1.437e-06
d
yr
n .1282831474086486 2.3992e-08 deg/d
Q 4.891204872493842 6.0985e-07 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 5.034554890332314E-9 1.714E-10
A2 [EST] 5.453391994221824E-9 2.783E-11
A3 [EST] -1.222228804458523E-8 2.012E-10
DT [EST] -315.4721310506458 3.683
  Orbit Determination Parameters
   # obs. used (total)      4014  
   data-arc span      9617 days (26.33 yr)  
   first obs. used      1989-01-05  
   last obs. used      2015-05-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .80355  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2015-May-12 21:27:06  

Additional Information
 Earth MOID = 1.88493 AU 
 T_jup = 2.987 
[ 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. K104/11 2 parameter fit from 1197 observations, autocmod 2.6
comet total magnitude slope K1 12.   n/a K104/11 autocmod 2.6
comet nuclear magnitude M2 11.9 mag 0.9 K104/11 from 2200 observations, autocmod 2.6
comet nuclear magnitude slope K2 5.   n/a K104/11 autocmod 2.6
comet nuclear phase coefficient PC 0.03   n/a K104/11 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 13:51 11:37 Jupiter 1.80838038991932 1.80791587636819 1.8088450792863 4.01379208939518 3.89535007642289 2418988.077381882 697.438021969677 2405.22245798445 67.0356543986439 -50.9736465835344 210191.993265686 T K104/11 CATAB v2.0c-linF95 2015-May-12 21:32:05 2015-May-12 21:32
1938-Jun-13 16:30 05:35 Jupiter 1.37568719207747 1.37553475877599 1.37583964971806 2.69493104117679 2.45585748758372 2429063.187692481 334.593144550338 544.986045396723 145.681509136858 57.8559213752723 54446.8376972835 T K104/11 CATAB v2.0c-linF95 2015-May-12 21:32:05 2015-May-12 21:32
1941-Aug-03 11:37 00:07 Jupiter 1.38389191111705 1.38345707903253 1.38432661376343 5.16298412277184 5.04304357241025 2430209.983962278 7.05676240645513 3206.96376486437 91.11546522961 4.40880390379624 15371.6772198817 T K104/11 CATAB v2.0c-linF95 2015-May-12 21:32:05 2015-May-12 21:32
1965-Jul-20 22:33 00:04 Jupiter 0.352487758056223 0.352470227087246 0.352505290215251 3.32999962706384 2.50657716857531 2438962.439265050 3.9492619088866 72.1938403889322 4.12442003714492 51.6619668452646 544406.323487267 T K104/11 CATAB v2.0c-linF95 2015-May-12 21:32:05 2015-May-12 21:32
2012-Dec-18 14:56 < 00:01 Jupiter 0.564406450725251 0.564404681643701 0.564408219804714 3.78791387994279 3.3685054023234 2456280.121938210 0.276838222548415 7.89570442811048 4.70101393810175 -38.4490733071652 874650.813204039 T K104/11 CATAB v2.0c-linF95 2015-May-12 21:32:05 2015-May-12 21:32
2034-Oct-18 11:55 01:15 Jupiter 1.48805022419093 1.48802797744311 1.48807247200184 1.87239747498109 1.53864862987823 2464253.996339507 75.4396833170785 65.7419317706832 7.57131225474085 -64.3582768371477 826331.678824585 T K104/11 CATAB v2.0c-linF95 2015-May-12 21:32:05 2015-May-12 21:32
2037-Apr-04 11:34 < 00:01 Jupiter 1.28021724373903 1.28018374919546 1.28025073745793 4.79543855296571 4.65542509532657 2465152.981764789 0.723927539106255 247.035912096918 8.42213792046371 -9.44269591950233 297907.579569487 T K104/11 CATAB v2.0c-linF95 2015-May-12 21:32:05 2015-May-12 21:32
2072-May-26 00:45 00:05 Jupiter 0.910441617899634 0.910359637285444 0.910523592928307 4.44103009231763 4.22635342985217 2477988.531304652 5.30767334460275 484.856623337442 20.573892993679 -14.4077667570293 120961.781832342 T K104/11 CATAB v2.0c-linF95 2015-May-12 21:32:05 2015-May-12 21:32
2096-Feb-07 03:57 00:43 Jupiter 0.730596239157147 0.730202909460319 0.730989420385697 3.78187807128238 3.4617749727324 2486645.664311917 43.4879435049457 1966.48084848776 19.3843360794511 -18.7685556206482 111556.422649295 T K104/11 CATAB v2.0c-linF95 2015-May-12 21:32:05 2015-May-12 21:32
2099-Jul-20 11:17 03:23 Jupiter 1.06340005879477 1.06309056659808 1.06370940956251 1.92296239992116 1.45077171164735 2487904.970123119 203.146469319912 1187.38773275831 6.14236510206942 -5.57545046445746 69824.5591891685 T K104/11 CATAB v2.0c-linF95 2015-May-12 21:32:05 2015-May-12 21:32
2132-Feb-19 05:59 06:08 Jupiter 1.89968712721122 1.89137279015486 1.90796734055979 5.97828309830881 5.90322956617942 2499805.749511276 367.947189326043 80495.1884458569 32.0007597146909 -6.91198678756329 104703.415370064 T K104/11 CATAB v2.0c-linF95 2015-May-12 21:32:05 2015-May-12 21:32
2136-Aug-26 10:52 2_21:47 Jupiter 1.24048280102317 1.23800431370125 1.24297523581467 2.90611110060834 2.66079839487864 2501455.952721423 4187.47391476332 8072.77730368408 20.811621872951 67.4609326638206 398729.873123852 T K104/11 CATAB v2.0c-linF95 2015-May-12 21:32:05 2015-May-12 21:32
2178-Aug-01 19:30 2_16:45 Jupiter 0.365101115448751 0.344268157621967 0.385755559489908 3.03493973733219 2.13797224936121 2516771.312588593 3885.01422626182 65530.7746156728 13.0162156204633 -33.2349928972929 111818.231413256 T K104/11 CATAB v2.0c-linF95 2015-May-12 21:32:05 2015-May-12 21:32

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1987.0       1989 XI   
 1979.4       1976 III   
 1971.7   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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Sep-01 16:09 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin