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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 2456799.5 (2014-May-22.0) TDB
Reference: JPL K104/9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2674067251690955 6.3168e-08  
a 3.862093193359074 4.4724e-07 AU
q 2.82934350022507 4.5316e-07 AU
i 9.388958447737568 6.9875e-06 deg
node 65.4113357003969 4.7269e-05 deg
peri 210.1912999029514 5.7743e-05 deg
M 201.0839972883767 4.6116e-05 deg
tp 2458023.264025963678
(2017-Sep-26.76402596)
0.00055602 JED
period 2772.251012041731
7.59
0.00048155
1.318e-06
d
yr
n .1298583708460311 2.2557e-08 deg/d
Q 4.894842886493079 5.6684e-07 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 4.928592721970587E-9 1.782E-10
A2 [EST] 5.442564895072801E-9 2.821E-11
A3 [EST] -1.186701686202419E-8 2.066E-10
DT [EST] -317.8664635340812 3.815
  Orbit Determination Parameters
   # obs. used (total)      3813  
   data-arc span      9220 days (25.24 yr)  
   first obs. used      1989-01-05  
   last obs. used      2014-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .82895  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2014-May-12 11:45:32  

Additional Information
 Earth MOID = 1.81772 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. K104/9 2 parameter fit from 1108 observations, autocmod 2.5c
comet total magnitude slope K1 12.   n/a K104/9 autocmod 2.5c
comet nuclear magnitude M2 11.9 mag 0.9 K104/9 from 2089 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a K104/9 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a K104/9 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 10:17 12:19 Jupiter 1.80832782458989 1.80783365274101 1.80882219331249 4.01331919589716 3.89485930664279 2418987.928459291 738.666358471596 2550.16572945852 68.8610810776421 -50.8198008055226 204138.993288789 T K104/9 CATAB v2.0c-linF95 2014-May-12 11:52:03 2014-May-12 11:52
1938-Jun-13 17:58 05:45 Jupiter 1.37562001083774 1.37546738346474 1.37577266234471 2.6945671334078 2.45544590253185 2429063.248482731 344.689234433283 553.966545947386 159.906477454699 59.1568730322321 50332.2510899209 T K104/9 CATAB v2.0c-linF95 2014-May-12 11:52:03 2014-May-12 11:52
1941-Aug-03 11:50 00:08 Jupiter 1.38370204220612 1.38324589998721 1.38415804253764 5.16251158842093 5.04254314318792 2430209.993053737 7.57663734882965 3358.04760787383 97.4148033054502 4.58260874682708 14932.0321703872 T K104/9 CATAB v2.0c-linF95 2014-May-12 11:52:03 2014-May-12 11:52
1965-Jul-20 22:29 00:04 Jupiter 0.352488102383669 0.352469005229155 0.352507200967358 3.33000374888017 2.50658358089979 2438962.436593315 4.20119326313611 79.4132278782986 4.20038743397637 51.7095727798707 534839.235756296 T K104/9 CATAB v2.0c-linF95 2014-May-12 11:52:03 2014-May-12 11:52
2012-Dec-18 14:56 < 00:01 Jupiter 0.564405888748802 0.564404103750936 0.564407673744221 3.7879112902564 3.36850204659686 2456280.122361748 0.286728728233001 8.04654822345379 4.80683153974212 -36.7731839135364 843441.878049492 T K104/9 CATAB v2.0c-linF95 2014-May-12 11:52:03 2014-May-12 11:52
2034-Oct-18 12:09 01:21 Jupiter 1.48804198115141 1.48801860984554 1.48806535367661 1.87236162331699 1.53860295203447 2464254.006176091 80.7441613017003 69.9964795964411 7.64134188637408 -64.6681252043185 820714.457972449 T K104/9 CATAB v2.0c-linF95 2014-May-12 11:52:03 2014-May-12 11:52
2037-Apr-04 11:34 < 00:01 Jupiter 1.28020615344922 1.28017002069293 1.28024228524657 4.79540545265828 4.65538976833882 2465152.982205228 0.775953146917435 265.957902982983 8.85987968968989 -9.48298958224895 284091.069194756 T K104/9 CATAB v2.0c-linF95 2014-May-12 11:52:03 2014-May-12 11:52
2072-May-26 00:44 00:06 Jupiter 0.910414471123352 0.910326570212703 0.910502365612161 4.44095946310687 4.22627264905256 2477988.530474477 5.75190788626777 519.760365998774 20.4704983088245 -14.3959462614635 121232.646793147 T K104/9 CATAB v2.0c-linF95 2014-May-12 11:52:03 2014-May-12 11:52
2096-Feb-07 04:18 00:47 Jupiter 0.730730162288348 0.730307764836652 0.731152388525617 3.78216258739148 3.46214716777349 2486645.679258035 46.6218230312362 2112.21999878989 19.2885125915378 -18.7669213185485 112123.678653456 T K104/9 CATAB v2.0c-linF95 2014-May-12 11:52:03 2014-May-12 11:52
2099-Jul-20 10:17 03:38 Jupiter 1.06350303208841 1.0631703676797 1.06383553280413 1.92296430269642 1.45082739267382 2487904.928809847 218.275978515398 1274.92987338382 6.73796152874069 -5.54232220744137 63226.5652515617 T K104/9 CATAB v2.0c-linF95 2014-May-12 11:52:03 2014-May-12 11:52
2132-Feb-18 18:32 06:36 Jupiter 1.89688422722448 1.88795812630903 1.90577094959802 5.97199338742118 5.89674807396622 2499805.272265136 396.002755224093 86293.3840105401 31.835487002335 -6.92085204917823 105113.364179303 T K104/9 CATAB v2.0c-linF95 2014-May-12 11:52:03 2014-May-12 11:52
2136-Aug-25 15:17 3_02:47 Jupiter 1.23963966268677 1.23697506854327 1.24232027714204 2.90418926596283 2.6585245586174 2501455.136529021 4486.85380666538 8658.40442625638 22.927343164596 67.2745144006264 360952.369146629 T K104/9 CATAB v2.0c-linF95 2014-May-12 11:52:03 2014-May-12 11:52
2178-Aug-03 07:47 2_21:54 Jupiter 0.372167234869961 0.349463081445177 0.394619429829983 3.03522193175545 2.15887331449633 2516772.823973068 4193.57224620229 71430.3934938977 13.0516189364152 -32.5204644339439 111509.643544131 T K104/9 CATAB v2.0c-linF95 2014-May-12 11:52:03 2014-May-12 11:52

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1987.4       1989 XI   
 1979.8       1976 III   
 1972.2   65P/1970 U2   1969 II   1970p 
 1957.0   65P/1954 P1       
 1949.4       1953 VIII   
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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